Vauxhall Workshop Service and Repair Manuals

DTC

Diagnostic Trouble Code Storage Condition

Intake Camshaft Phasing Powerstage Circuit High Voltage

• Final stage diagnosis in control unit
  (Short circuit to voltage)

Intake Camshaft Phasing Powerstage Circuit Low Voltage

• Final stage diagnosis in control unit
  (Short circuit to ground)

Intake Camshaft Phasing Powerstage Circuit Open

• Final stage diagnosis in control unit
  (Circuit interruption)

Intake Camshaft Phasing Mechanics Malfunction

• The control unit recognises a wrong position of the camshaft

Intake Camshaft Phasing Mechanics Range/Performance (Bank 1)

• The control unit recognises a wrong position of the camshaft

Intake Camshaft Phasing Mechanical Reference Position Range/Peformance (Bank 1)

• The control unit recognises a wrong position of the camshaft

Exhaust Camshaft Phasing Powerstage Circuit High Voltage

• Final stage diagnosis in control unit
  (Short circuit to voltage)

Exhaust Camshaft Phasing Powerstage Circuit Low Voltage

• Final stage diagnosis in control unit
  (Short circuit to ground)

Exhaust Camshaft Phasing Powerstage Circuit Open

• Final stage diagnosis in control unit
  (Circuit interruption)

Exhaust Camshaft Phasing Mechanics Malfunction

• The control unit recognises a wrong position of the camshaft

Exhaust Camshaft Phasing Mechanics Range/Performance

• The control unit recognises a wrong position of the camshaft

Exhaust Camshaft Phasing Mechanical Reference Position Range/Performance

• The control unit recognises a wrong position of the camshaft

O2 Sensor Heater Circuit Range/Performance (Bank 1 Sensor 1)

• Signal is out of range

O2 Sensor Heater Circuit Range/Performance (Bank 1 Sensor 2)

• Signal is out of range

Load/Throttle Position not plausible

• The control unit recognises a general plausibility error at the throttle position sensor or the mass air flow sensor

Intake Manifold Solenoid Valve 1 Circuit High Voltage

• Final stage diagnosis in control unit
  (Short circuit to voltage)

Intake Manifold Solenoid Valve 1 Circuit Low Voltage

• Final stage diagnosis in control unit
  (Short circuit to ground or circuit interruption)

Mass Or Volume Air Flow Circuit High Input

• The sensor signal is out of the plausible range
  (Short circuit to voltage)

Mass Or Volume Air Flow Circuit Low Input

• The sensor signal is out of the plausible range
  (Short circuit to ground or circuit interruption)

Manifold Absolute Pressure (MAP) Sensor Voltage Low

• Engine running
• Intake manifold absolute pressure is less than 520 hPa ( 0.52 bar )

Replacement Value:

• The control unit calculates with a replacement characteristic map depending on the engine speed and throttle valve position.

Effect:

• All adaptations are locked.

Manifold Absolute Pressure (MAP) Sensor Voltage High

• Engine running
• Intake manifold absolute pressure is greater than 490 hPa ( 0.49 bar )

Replacement Value:

• The control unit calculates with a replacement characteristic map depending on the engine speed and throttle valve position.

Effect:

• All adaptations are locked.

Manifold Absolute Pressure Sensor Circuit Malfunction

• The control unit recognises the malfunction of the circuit via an internal evaluation logic.

Replacement Value:

• The control unit calculates with a replacement characteristic map depending on the engine speed and throttle valve position.

Effect:

• All adaptations are locked.

Intake Air Temperature Sensor Circuit Low Input

• The sensor signal is out of the plausible range
  (Short circuit to ground)

Intake Air Temperature Sensor Circuit High Input

• The sensor signal is out of the plausible range
  (Short circuit to voltage or circuit interruption)

Engine Coolant Temperature Circuit High Input

• The sensor signal is out of the plausible range
  (Short circuit to voltage or circuit interruption)

Engine Coolant Temperature Circuit Low Input

• The sensor signal is out of the plausible range
  (Short circuit to ground)

Engine Coolant Temperature Sensor Circuit Range/Performance

• The sensor signal is out of the plausible range

Throttle/Pedal Position Sensor/Switch "A" Circuit Low Input

• Final stage diagnosis in control unit
  (Short circuit to ground)

Throttle/Pedal Position Sensor/Switch "A" Circuit High Input

• The sensor signal is out of the plausible range
  (Short circuit to voltage or circuit interruption)

Throttle/Pedal Position Sensor/Switch "A" Circuit Range/Performance Problem

• The control unit recognises the malfunction of the circuit via an internal evaluation logic.

O2 Sensor Circuit High Voltage (Bank 1 Sensor 1)

• The sensor signal is out of the plausible range
  (Short circuit to voltage)

O2 Sensor Circuit Low Voltage (Bank 1 Sensor 1)

• The sensor signal is out of the plausible range
  (Short circuit to ground)

O2 Sensor Circuit Open (Bank 1 Sensor 1)

• The sensor signal is out of the plausible range
  (Circuit interruption)

O2 Sensor Circuit Range/Performance (Bank 1 Sensor 1)

• The sensor signal is out of the plausible range

O2 Sensor Circuit Malfunction (Bank 1 Sensor 1)

• The sensor signal is out of the plausible range

O2 Sensor Failed

• The control unit recognises a plausibility error in the following circuit:
  B166 Sensor - Oxygen, Mixture Control, Heated

O2 Sensor Circuit Slow Response (Bank 1 Sensor 1)

• The control unit recognises the malfunction of the circuit via an internal evaluation logic.

O2 Sensor Heater Circuit High Voltage (Bank 1 Sensor 1)

• Final stage diagnosis in control unit
  (Short circuit to voltage)

O2 Sensor Heater Circuit Low Voltage (Bank 1 Sensor 1)

• Final stage diagnosis in control unit
  (Short circuit to ground)

O2 Sensor Heater Circuit Open (Bank 1 Sensor 1)

• Final stage diagnosis in control unit
  (Circuit interruption)

O2 Sensor Circuit High Voltage (Bank 1 Sensor 2)

• The sensor signal is out of the plausible range
  (Short circuit to voltage)

O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2)

• The sensor signal is out of the plausible range
  (Short circuit to ground)

O2 Sensor Circuit Open (Bank 1 Sensor 2)

• Final stage diagnosis in control unit
  (Circuit interruption)

O2 Sensor Circuit Malfunction (Bank 1 Sensor 2)

• The sensor signal is out of the plausible range

O2 Sensor Heater Circuit High Voltage (Bank 1 Sensor 2)

• Final stage diagnosis in control unit
  (Short circuit to voltage)

O2 Sensor Heater Circuit Low Voltage (Bank 1 Sensor 2)

• Final stage diagnosis in control unit
  (Short circuit to ground)

O2 Sensor Heater Circuit Open (Bank 1 Sensor 2)

• Final stage diagnosis in control unit
  (Circuit interruption)

O2 Sensor Lean Exhaust

• Oxygen sensor control limit "rich" was reached for 60 s .

Conditions to enable trouble code recognition

• Coolant temperature is greater than 85 °C (185 °F)
• Oxygen sensor closed loop control is activated

O2 Sensor Rich Exhaust

• Oxygen sensor control limit "lean" was reached for 60 s .

Conditions to enable trouble code recognition

• Coolant temperature is greater than 85 °C (185 °F)
• Oxygen sensor closed loop control is activated

Cylinder 1 Injector Circuit High

• Final stage diagnosis in control unit
  (Short circuit to voltage)

Effect:

• The defective injector is no longer actuated. The other injectors function normally.

Cylinder 1 Injector Circuit Low

• Final stage diagnosis in control unit
  (Short circuit to ground)

Effect:

• The defective injector is no longer actuated. The other injectors function normally.

Cylinder 1 Injector Circuit Open

• Final stage diagnosis in control unit
  (Circuit interruption)

Effect:

• The defective injector is no longer actuated. The other injectors function normally.

Cylinder 2 Injector Circuit High

• Final stage diagnosis in control unit
  (Short circuit to voltage)

Effect:

• The defective injector is no longer actuated. The other injectors function normally.

Cylinder 2 Injector Circuit Low

• Final stage diagnosis in control unit
  (Short circuit to ground)

Effect:

• The defective injector is no longer actuated. The other injectors function normally.

Cylinder 2 Injector Circuit Open

• Final stage diagnosis in control unit
  (Circuit interruption)

Effect:

• The defective injector is no longer actuated. The other injectors function normally.

Cylinder 3 Injector Circuit High

• Final stage diagnosis in control unit
  (Short circuit to voltage)

Effect:

• The defective injector is no longer actuated. The other injectors function normally.

Cylinder 3 Injector Circuit Low

• Final stage diagnosis in control unit
  (Short circuit to ground)

Effect:

• The defective injector is no longer actuated. The other injectors function normally.

Cylinder 3 Injector Circuit Open

• Final stage diagnosis in control unit
  (Circuit interruption)

Effect:

• The defective injector is no longer actuated. The other injectors function normally.

Cylinder 4 Injector Circuit High

• Final stage diagnosis in control unit
  (Short circuit to voltage)

Effect:

• The defective injector is no longer actuated. The other injectors function normally.

Cylinder 4 Injector Circuit Low

• Final stage diagnosis in control unit
  (Short circuit to ground)

Effect:

• The defective injector is no longer actuated. The other injectors function normally.

Cylinder 4 Injector Circuit Open

• Final stage diagnosis in control unit
  (Circuit interruption)

Effect:

• The defective injector is no longer actuated. The other injectors function normally.

Engine Overspeed Condition

• Engine speed was greater than 7200 rpm
• Inform the customer that this extremely high rpms may cause mechanical damage.

Throttle/Pedal Position Sensor/Switch "B" Circuit High Input

• The sensor signal is out of the plausible range
  (Short circuit to voltage)

Throttle/Pedal Position Sensor/Switch "B" Circuit Low Input

• The sensor signal is out of the plausible range
  (Short circuit to ground or circuit interruption)

Throttle/Pedal Position Sensor/Switch "B" Circuit Range/Performance Problem

• The control unit recognises the malfunction of the circuit via an internal evaluation logic.

Fuel Pump Primary Circuit Low

• Final stage diagnosis in control unit
  (Short circuit to ground)

Fuel Pump Primary Circuit High

• Final stage diagnosis in control unit
  (Short circuit to voltage or circuit interruption)

Cylinder 1 Misfire Detected

• The control unit detects misfiring from cylinder 1

Cylinder 2 Misfire Detected

• The control unit detects misfiring from cylinder 2

Cylinder 3 Misfire Detected

• The control unit detects misfiring from cylinder 3

Cylinder 4 Misfire Detected

• The control unit detects misfiring from cylinder 4

Crankshaft Sensor Segment Error

• Crankshaft Position variation is not within an acceptable range, or can not be learned

Crankshaft Sensor Adaption Malfunction

• Crankshaft Position variation is not within an acceptable range, or can not be learned

Knock Sensor 1 Circuit Range/Performance (Bank 1 Or Single Sensor)

• Engine not in operating condition:
  Engine stationary
  Start
  Restart
• The control unit recognises an implausible value from the knock module

Effect:

• The knock control is locked.

Crankshaft Sensor Open Circuit

• Crankshaft signal not recognised

Crankshaft Position Sensor Signal Range/Performance

• Irregular crankshaft-speed-signal

Crankshaft Sensor Incorrect Signal

• Irregular crankshaft-speed-signal

Intake Camshaft Position Sensor Circuit Open (Bank 1)

• Camshaft signal not recognised

Intake Camshaft Position Range/Performance (Bank 1)

• The control unit recognises a wrong position of the camshaft

Ignition Coil Cylinder 1 Circuit High Voltage

• Final stage diagnosis in control unit
  (Short circuit to voltage)

Ignition Coil Cylinder 1 Circuit Range/Performance

• The control unit recognises the malfunction of the circuit via an internal evaluation logic.

Ignition Coil Cylinder 2 Circuit High Voltage

• Final stage diagnosis in control unit
  (Short circuit to voltage)

Ignition Coil Cylinder 2 Circuit Range/Performance

• The control unit recognises the malfunction of the circuit via an internal evaluation logic.

Ignition Coil Cylinder 3 Circuit High Voltage

• Final stage diagnosis in control unit
  (Short circuit to voltage)

Ignition Coil Cylinder 3 Circuit Range/Performance

• The control unit recognises the malfunction of the circuit via an internal evaluation logic.

Ignition Coil Cylinder 4 Circuit High Voltage

• Final stage diagnosis in control unit
  (Short circuit to voltage)

Ignition Coil Cylinder 4 Circuit Range/Performance

• The control unit recognises the malfunction of the circuit via an internal evaluation logic.

Camshaft Position Sensor Circuit No Signal

• Camshaft signal not recognised

Camshaft Position Sensor Circuit Range/Performance

• The control unit recognises no or an implausible camshaft signal.

Catalyst System Efficiency Below Threshold (Bank 1)

• The conversion rate of the catalyst is too low

Fuel Tank Ventilation Valve Voltage High

• Final stage diagnosis in control unit
  (Short circuit to voltage)

Fuel Tank Ventilation Valve Voltage Low

• Final stage diagnosis in control unit
  (Short circuit to ground)

Fuel Tank Ventilation Open Circuit

• Final stage diagnosis in control unit
  (Circuit interruption)

Invalid Data from REC (Rear Electrical Centre)

• The ECM receives an invalid signal from the REC via CAN-Bus.
• Above condition must be fulfilled for at least 1 s .

Fan Control 1 Circuit High Voltage

• Final stage diagnosis in control unit
  (Short circuit to voltage)

Fan Control 1 Circuit Low Voltage

• Final stage diagnosis in control unit
  (Short circuit to ground)

Fan Control 2 Circuit High Voltage

• Final stage diagnosis in control unit
  (Short circuit to voltage)

Fan Control 2 Circuit Low Voltage

• Final stage diagnosis in control unit
  (Short circuit to ground or circuit interruption)

Fan Control 3 Circuit High Voltage

• Final stage diagnosis in control unit
  (Short circuit to voltage)

Fan Control 3 Circuit Low Voltage

• Final stage diagnosis in control unit
  (Short circuit to ground or circuit interruption)

Vehicle Speed Signal Range/Performance

• The sensor signal is out of the plausible range

Vehicle Speed Sensor Malfunction

• Incorrect message or invalid data received from ABS

A/C Pressure Sensor Circuit High Input

• The sensor signal is out of the plausible range
  (Short circuit to voltage)

A/C Pressure Sensor Circuit Open

• The sensor signal is out of the plausible range
  (Circuit interruption)

Cruise Control Interface Malfunction

• The control unit recognises a malfunction via an internal evaluation logic at the following component:
  Cruise Control

Brake Light Switch Circuit Malfunction

• The sensor signal is out of the plausible range

Brake Light Switch Circuit High Input

• The sensor signal is out of the plausible range
  (Short circuit to voltage)

Cruise Control/Brake Switch "A" Circuit Malfunction

• The sensor signal is out of the plausible range

Brake Light Switch Circuit Low Input

• The sensor signal is out of the plausible range
  (Short circuit to ground)

Coolant Thermostat Valve Stuck

• System/component mechanical fault

Coolant Thermostat Valve Circuit Open

• The sensor signal is out of the plausible range

Coolant Thermostat Valve Circuit High Voltage

• Final stage diagnosis in control unit
  (Short circuit to voltage)

Coolant Thermostat Valve Circuit Low Voltage

• Final stage diagnosis in control unit
  (Short circuit to ground)

Replace Electronic Control Unit (ECU)

• Control unit hardware failure (EPROM defective, checksum fault)
• The fault is immediately recognised with ignition ON.

Generator Lamp "L" Control Circuit Malfunction

• The control unit recognises the malfunction of the circuit via an internal evaluation logic.
• Incorrect voltage level at control unit terminal 52 XC4

A/C Relay Voltage High

• Final stage diagnosis in control unit
  (Short circuit to voltage)

A/C Relay Voltage Low

• Final stage diagnosis in control unit
  (Short circuit to ground or circuit interruption)

CAN-Bus Failure - No CAN-Message

• Final stage diagnosis in control unit
  (Short circuit to ground or circuit interruption)

Main Relay Circuit High Voltage

• Final stage diagnosis in control unit
  (Short circuit to voltage)

Main Relay Circuit Low Voltage

• Final stage diagnosis in control unit
  (Short circuit to ground or circuit interruption)

Malfunction Indicator (MI) Request from Transmission Control Module (TCM) Range/Perform.

• MI-Request from Transmission Control Module

Brake Switch Circuit Low Voltage

• The control unit recognises the malfunction of the circuit via an internal evaluation logic.
  (Short circuit to ground or circuit interruption)

Brake Switch Failure

• The control unit recognises the malfunction of the circuit via an internal evaluation logic.
  (Short circuit to voltage)

Brake Switch Circuit High Voltage

• The control unit recognises the malfunction of the circuit via an internal evaluation logic.
  (Short circuit to voltage)

Brake Switch Circuit Malfunction

• The control unit recognises the malfunction of the circuit via an internal evaluation logic.
  (Short circuit to ground or circuit interruption)

Clutch Switch Input Circuit Malfunction

• The sensor signal is out of the plausible range
  (Short circuit to ground/voltage or circuit interruption)

Immobiliser Function not Programmed

• The engine control unit is in reset state.

Effect:

• The Service Vehicle Soon Telltale is flashing.

Immobiliser Malfunction

• The engine control unit is in reset state.

Effect:

• The Service Vehicle Soon Telltale is flashing.

Wrong Security Code Entered

• Entered security code is not valid for the actual vehicle

Effect:

• The Service Vehicle Soon Telltale is flashing.

Immobiliser No Or Wrong Signal

• Communication error between the CIM and the engine control unit.

Effect:

• Engine operation is impossible.
• The Service Vehicle Soon (SVS) Pictograph flashes

Immobiliser Wrong Signal Received

• Wrong transponder response received.

or

• The Environment Identification failed.

Effect:

• Engine operation is impossible.
• The Service Vehicle Soon (SVS) Pictograph flashes

Wrong Transponder Key

• Communication error between the CIM and the engine control unit.

Effect:

• Engine operation is impossible.
• The Service Vehicle Soon (SVS) Pictograph flashes

ECM (Engine Control Module) Identification Failed

• The engine control unit identification failed.
• Vehicle-ID not received

Effect:

• Engine operation is impossible.
• The Service Vehicle Soon (SVS) Pictograph flashes

CIM (Steering Column Module) Wrong Environment Identifier

• The Environment Identification failed.

Effect:

• Engine operation is impossible.
• The Service Vehicle Soon (SVS) Pictograph flashes

Service Vehicle Soon Request from Transmission Control Module

• SVS-request from Transmission Control Module

Throttle Control Motor Malfunction

• The sensor signal is out of the plausible range

Electronic Throttle Control Reduced Power

• "Emergency Mode" is activated

Effect:

• Engine running in "Emergency Mode"

Electronic Throttle Control Forced Idle

• "Emergency Mode" is activated

Effect:

• Engine idle speed is increased

Electronic Throttle Control Power Management

• "Emergency Mode" is activated

Effect:

• Maximum performance will be reduced.

Electronic Throttle Control Engine Stop

• "Emergency Mode" is activated

Effect:

• Engine is stopped.

Powerstage Currentless

• Final stage diagnosis in control unit
  One or more final stage faults in the control unit

Throttle Control Malfunction

• The sensor signal is out of the plausible range

Accelerator Pedal Position Sensor 1 Voltage High

• The control unit recognises the malfunction of the circuit via an internal evaluation logic.
  (Short circuit to voltage)

Accelerator Pedal Position Sensor 1 Voltage Low

• The control unit recognises the malfunction of the circuit via an internal evaluation logic.
  (Short circuit to ground or circuit interruption)

Accelerator Pedal Position Sensor 1 and 2 Signal Incorrect Ratio

• Sensor signal is out of range

Accelerator Pedal Position Sensor 2 Voltage High

• The control unit recognises the malfunction of the circuit via an internal evaluation logic.
  (Short circuit to voltage)

Accelerator Pedal Position Sensor 2 Voltage Low

• The control unit recognises the malfunction of the circuit via an internal evaluation logic.
  (Short circuit to ground or circuit interruption)

Throttle Position Signal Malfunction

• The sensor signal is out of the plausible range

or

• System/component mechanical fault

Lower Limit Adaption Error

Limp Home Adaption Error

or

• System/component mechanical fault

Throttle Position Adaption Error

• The learning procedure could not be executed completely.

Battery Voltage Range/Performance

• The learning procedure could not be executed because of the following reason:
  The system voltage is out of range.

Engine Speed Signal Range/Performance

• The learning procedure could not be executed because of the following reason:
  The engine speed is out of range.

Throttle Relaxer Position Sensor Fault

• The sensor signal is out of the plausible range
  (Short circuit to voltage)

Vehicle Speed Sensor Range/Performance

• The learning procedure could not be executed because of the following reason:
  The vehicle speed is out of range.

Intake Air Temperature Circuit Range/Performance Problem

• The learning procedure could not be executed because of the following reason:
  The intake air temperature is out of range.

or

Engine Coolant Temperature Sensor Open Or Short Circuit

• The sensor signal is out of the plausible range
  (Short circuit to voltage or circuit interruption)

Engine Coolant Temperature Sensor Circuit Low Voltage

• The sensor signal is out of the plausible range
  (Short circuit to ground)

Engine Coolant Temperature Sensor Circuit Range/Performance

• The sensor signal is out of the plausible range

Engine Torque Request Signal Range/Performance

• The control unit recognises the malfunction of the circuit via an internal evaluation logic.

Invalid Signal from TCM (Transmission Control Module)

• The control unit recognises a fault in the following system:
  Automatic Transmission

Invalid Signal from ACC (Adaptiv Cruise Control)

• The control unit recognises incorrect CAN-Bus data

Torque Signal Malfunction (CAN)

• The control unit recognises a fault in the following system:
  Anti-Lock Brake System

Invalid Signal from ECC (Electronic Climate Control)

• The control unit recognises a fault in the following system:
  Air Conditioning System