DTC P0133, P0134, P0140, P1133, P2270, P2271, or P2A00
(LDD)
Diagnostic Instructions
DTC Descriptors
DTC P0133 00: HO2S Slow Response Sensor 1 |
DTC P0134 00: HO2S Circuit Insufficient
Activity Sensor 1 |
DTC P0140 00: HO2S Circuit Insufficient
Activity Sensor 2 |
DTC P1133 00: HO2S Insufficient Switching
Sensor 1 |
DTC P2270 00: HO2S Signal Stuck Lean Sensor
2 |
DTC P2271 00: HO2S Signal Stuck Rich Sensor
2 |
DTC P2A00 00: HO2S Circuit Closed Loop
Performance Sensor 1 |
Diagnostic Fault Information
Circuit
|
Short to Ground
|
Open/High Resistance
|
Short to Voltage
|
Signal Performance
|
HO2S 1 or 2 Signal
|
P0131 00, P0132 00, P0137 00, P0140 00, P1133 00, P2A00 00
|
P0131 00, P0132 00, P0133 00, P0134 00, P0137 00, P0140 00, P1133
00, P2A00 00
|
P0132 00, P0134 00, P0138 00, P0140 00, P1133 00, P2A00 00
|
P0133 00, P0134 00, P0140 00, P1133 00, P2270 00. P2A00 00
|
HO2S 1 or 2 Low Signal
|
P2A00 00
|
P0131 00, P0132 00, P0133 00, P0134 00, P0138 00, P0140 00, P1133
00, P2A00 00
|
P0134 00, P0138 00, P0140 00, P1133 00, P2A00 00
|
P2271 00, P2A00 00
|
|
|
Typical Scan Tool Data
HO2S 1 or 2
Circuit
|
Short to Ground
|
Open
|
Short to Voltage
|
Operating Conditions: Engine operating
in Closed Loop
Parameter Normal Range: 50-1 050 mV
|
HO2S 1 or 2 Signal
|
0 mV
|
1 275 mV
|
1 275 mV
|
HO2S 1 or 2 Low Signal
|
-
|
1 275 mV
|
-
|
|
|
Circuit/System Description
The heated oxygen sensors (HO2S) are used for fuel control and
catalyst monitoring. Each HO2S compares the oxygen content of the
surrounding air with the oxygen content of the exhaust stream. When
the engine is started, the control module operates in an open loop
mode, ignoring the HO2S signal voltage while calculating the air to
fuel ratio. While the engine runs, the HO2S heats up and begins to
generate a voltage within a range of 0-1 275 mV. Once sufficient
HO2S voltage fluctuation is observed by the control module, closed
loop is entered. The control module uses the HO2S voltage to
determine the air to fuel ratio. An HO2S voltage that increases
toward 1 000 mV indicates a rich fuel mixture. An HO2S voltage that
decreases toward 0 mV indicates a lean fuel mixture.
The heating elements inside each HO2S heat the sensor to bring
the sensor up to operating conditions faster. This allows the
system to enter closed loop earlier and the control module to
calculate the air to fuel ratio sooner.
Conditions for Running the DTC
P0133 00
• |
DTCs P0068 00, P0101 00, P0102
00, P0103 00, P0106 00, P0107 00, P0108 00, P0112 00, P0113 00,
P0117 00, P0118 00, P0120 00, P0121 00, P0122 00, P0123 00, P0201
00, P0202 00, P0203 00, P0204 00, P0220 00, P0222 00, P0223 00,
P0443 00, P1516 00, P2101 00, P2119 00, P2135 00, P2176 00 are not
set. |
• |
The engine coolant temperature
(ECT) sensor parameter is more than 70°C (158°F).
|
• |
The ignition signal parameter
is between 10-18 V. |
• |
The fuel level sensor
parameter is more than 10%. |
• |
The engine run time parameter
is more than 200 s. |
• |
The engine speed parameter is
between 1 000-3 500 RPM. |
• |
The manifold absolute pressure
(MAP) sensor parameter is more than 30 kPa. |
• |
The mass air flow (MAF) sensor
parameter is between 11-50 g/s. |
• |
The loop status parameter is
closed. |
• |
The throttle position
indicated angle parameter is more than 5%. |
• |
DTC P0131 00 runs once per
drive cycle when the above conditions are met for 2 s. |
P0134 00
• |
DTCs P0068 00, P0101 00, P0102
00, P010 00, P0106 00, P0107 00, P0108 00, P0112 00, P0113 00,
P0117 00, P0118 00, P0120 00, P0121 00, P0122 00, P0123 00, P0201
00, P0202 00, P0203 00, P0204 00, P0220 00, P0222 00, P0223 00,
P0443 00, P1516 00, P2101 00, P2119 00, P2135 00, P2176 00 are not
set. |
• |
The engine coolant temperature
(ECT) sensor parameter is more than 70°C (158°F).
|
• |
The ignition signal parameter
is between 10-18 V. |
• |
The engine run time is more
than 200 s. |
• |
DTC P0134 00 runs continuously
when the above conditions are met. |
P0140 00
• |
DTCs P0068 00, P0101 00, P0102
00, P010 00, P0106 00, P0107 00, P0108 00, P0112 00, P0113 00,
P0117 00, P0118 00, P0120 00, P0121 00, P0122 00, P0123 00, P0201
00, P0202 00, P0203 00, P0204 00, P0220 00, P0222 00, P0223 00,
P0443 00, P1516 00, P2101 00, P2119 00, P2135 00, P2176 00 are not
set. |
• |
The ECT sensor parameter is
more than 70°C (158°F). |
• |
The ignition signal parameter
is between 10-18 V. |
• |
The engine run time parameter
is more than 200 s. |
• |
The loop status parameter is
closed. |
• |
DTC P0140 00 runs once per
drive cycle when the above conditions are met. |
P1133 00
• |
DTCs P0068 00, P0101 00, P0102
00, P010 00, P0106 00, P0107 00, P0108 00, P0112 00, P0113 00,
P0117 00, P0118 00, P0120 00, P0121 00, P0122 00, P0123 00, P0201
00, P0202 00, P0203 00, P0204 00, P0220 00, P0222 00, P0223 00,
P0443 00, P1516 00, P2101 00, P2119 00, P2135 00, P2176 00 are not
set. |
• |
The ECT sensor parameter is
more than 70°C (158°F). |
• |
The engine speed parameter is
between 1 500-3 500 RPM. |
• |
The system voltage is between
10-18 V. |
• |
The engine run time parameter
is more than 200 s. |
• |
The loop status parameter is
closed. |
• |
The throttle position
indicated angle parameter is more than 5. |
• |
The fuel level sensor
parameter is more than 10%. |
• |
The MAP sensor parameter is
more than 30 kPa. |
• |
The MAF sensor parameter is
between 11-50 g/s. |
• |
The engine coolant is hotter
than 50.25°C (122.45°F). |
• |
DTC P1133 00 runs once per
drive cycle when the above conditions are met for 2 s. |
P2270 00
• |
DTCs P0030 00, P0036 00, P0053
00, P0054 00, P0101 00, P0102 00, P0103 00, P0106 00, P0107 00,
P0108 00, P0120 00, P0121 00, P0122 00, P0123 00, P0131 00, P0132
00, P0133 00, P0134 00, P0135 00, P0137 00, P0138 00, P0140 00,
P0141 00, P0171 00, P0172 00, P0201 00, P0202 00, P0203 00, P0204
00, P0220 00, P0222 00, P0223 00, P0300 00, P0443 00, P1133 00,
P1516 00, P2101 00, P2119 00, P2135 00, P2176 00, P2270 00, P2271
00, P2A00 00 are not set. |
• |
The system voltage is between
10-18 V. |
• |
The fuel level is more than
10%. |
• |
Engine run time is equal to or
more than 255 s. |
• |
The engine speed is between 1
100-3 200 RPM. |
• |
The airflow is equal to or
more than 0 g/s and equal to or less than 25 g/s. |
• |
The vehicle speed is equal to
or more than 45 km/h (28 MPH) and equal to or less than 129 km/h
(80 MPH). |
• |
The short term fuel trim is
equal to or more than 0.9, and equal to or less than 1 065.
|
• |
The loop status parameter is
closed. |
• |
The evaporative emission
(EVAP) diagnostics are not in control of purge. |
• |
The heater warm-up delay is
more than 120 s. |
• |
The catalyst temperature is
equal to or more than 650°C (1 202°F), and equal to less
than 900°C (1 652°F). |
• |
DTC P2270 00 runs once per
trip when all of the above conditions have been met for 2 s.
|
P2271 00
• |
DTCs P0030 00, P0036 00, P0053
00, P0054 00, P0101 00, P0102 00, P0103 00, P0106 00, P0107 00,
P0108 00, P0120 00, P0121 00, P0122 00, P0123 00, P0131 00, P0132
00, P0133 00, P0134 00, P0135 00, P0137 00, P0138 00, P0140 00,
P0141 00, P0171 00, P0172 00, P0201 00, P0202 00, P0203 00, P0204
00, P0220 00, P0222 00, P0223 00, P0300 00, P0443 00, P1133 00,
P1516 00, P2101 00, P2119 00, P2135 00, P2176 00, P2270 00, P2271
00, P2A00 00 are not set. |
• |
The system voltage is between
10-18 V. |
• |
The fuel level is more than
10%. |
• |
Engine run time is equal to or
more than 255 s. |
• |
Deceleration fuel cut-off is
active. |
• |
The accelerator pedal position
(APP) is stable. |
• |
The torque converter clutch
(TCC) is locked. |
• |
DTC P2270 00 has run and
passed. |
• |
DTC P2271 00 runs once per
trip. |
P2A00 00
• |
DTCs P0068 00, P0101 00, P0102
00, P0103 00, P0106 00, P0107 00, P0108 00, P0112 00, P0113 00,
P0117 00, P0118 00, P0120 00, P0121 00, P0122 00, P0123 00, P0201
00, P0202 00, P0203 00, P0204 00, P0220 00, P0222 00, P0223 00,
P0443 00, P1516 00, P2101 00, P2119 00, P2135 00, P2176 00 are not
set. |
• |
The engine run time parameter
is more than 100 s. |
• |
The engine speed parameter is
between 1 000-3 400 RPM. |
• |
The ignition signal parameter
is between 10-18 s. |
• |
The mass air flow (MAF) sensor
parameter is between 10-30 g/s. |
• |
The engine coolant is hotter
than 70°C (158°F). |
• |
DTC P2A00 00 runs continuously
when the above conditions are met for 5 s. |
Conditions for Setting the DTC
P0133 00
• |
The ECM detects that the
heated oxygen sensor (HO2S) 1 rich to lean or lean to rich average
response time is more than 0.1 s. |
• |
DTC P0133 00 sets within 60 s
when the above condition is met. |
P0134 00
• |
The ECM detects that the
heated oxygen sensor (HO2S) 1 parameter is between 400-500 mV for
100 s. |
• |
The throttle position
indicated angle parameter changes more than 1%, 3 times.
|
• |
DTC P0134 00 sets within 100 s
when the above condition is met. |
P013A 00
The ECM detects that the accumulated mass air flow monitored during
rich to lean transitions between 550-775 mV is more than 15 g.
P013B 00
The ECM detects that the accumulated mass air flow monitored during
rich to lean transitions between 550-775 mV is more than 15 g.
P013E 00
The ECM detects that the heated oxygen sensor (HO2S) 2 cannot
achieve voltage below 450 mV within 8 g of accumulated air flow.
P013F 00
The ECM detects that the heated oxygen sensor (HO2S) 2 cannot
achieve voltage above 550 mV within 28 g of accumulated air flow.
P0140 00
• |
The ECM detects that the
heated oxygen sensor (HO2S) 2 parameter is between 425-475
mV. |
• |
The throttle position
indicated angle parameter changes more than 1% 3 times.
|
• |
DTC P0140 00 sets within 100 s
when the above conditions are met. |
P1133 00
• |
The ECM detects that the
heated oxygen sensor (HO2S) 1 rich to lean counts, or the lean to
rich counts are less than a calibrated value. |
• |
DTC P1133 00 sets within 60 00
when the above condition is met. |
P2270 00
• |
The ECM detects that the
heated oxygen sensor (HO2S) 2 sensor cannot achieve voltage equal
to or more than 775 mV. |
• |
The ECM detects that the
accumulated mass air flow monitored during the Stuck Lean Voltage
Test is more than 45 g. |
P2271 00
• |
The ECM detects that the
heated oxygen sensor (HO2S) 2 sensor cannot achieve voltage equal
to or less than 100 mV. |
• |
The ECM detects that the
accumulated mass air flow monitored during the stuck rich voltage
test is more than 20 . |
P2A00 00
• |
The ECM detects that the
heated oxygen sensor (HO2S) 1 loop status parameter is open.
|
• |
DTC P2A00 00 sets within 50 s
when the above condition is met. |
Action Taken When the DTC Sets
• |
DTCs P0133 00, P0134 00, P013E
00, P013F 00, P0140 00, P1133 00, P2270 00, P2271 00, P2A00 00 are
Type B DTCs. |
• |
DTCs P013A 00 and P013B 00 are
Type A DTCs. |
Conditions for Clearing the DTC
• |
DTCs P0133 00, P0134 00, P013E
00, P013F 00, P0140 00, P1133 00, P2270 00, P2271 00, P2A00 00 are
Type B DTCs. |
• |
DTCs P013A 00 and P013B 00 are
Type A DTCs. |
Reference Information
Schematic Reference
Engine Controls Schematics
Connector End View Reference
Component Connector End Views
Electrical Information Reference
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
1. |
If any heated oxygen sensor
(HO2S) heater DTCs are set, perform those diagnostics first.
|
2. |
Allow the engine to reach
operating temperature. |
3. |
Engine running, observe the
affected heated oxygen sensor (HO2S) parameter with a scan
tool. |
|
• |
The heated oxygen sensor
(HO2S) 1 value should vary from below 200 mV to above 800 mV and
respond to fueling changes. |
|
• |
The heated oxygen sensor
(HO2S) 2 value should change more than 200 mV when the throttle is
quickly cycled 3 times from closed to wide open and back to closed
after running the engine at 1 500 RPM for 30 s. |
4. |
The affected heated oxygen
sensor (HO2S) may be damaged due to contamination. Prior to
replacing the affected heated oxygen sensor (HO2S), inspect for the
following sources of contamination: |
|
• |
A silicon contaminated
HO2S |
5. |
Operate the vehicle within the
conditions for running the DTC. You may also operate the vehicle
within the conditions that you observed from the freeze
frame/failure records data. |
Circuit/System Testing
Note: All modules must be
powered down or misdiagnosis may result.
1. |
Ignition OFF, disconnect the
scan tool and wait 60 s to ensure all modules are powered
down. |
2. |
Ignition OFF, disconnect the
B52A Heated Oxygen Sensor 1 or B52B Heated Oxygen Sensor 2 harness
connector. |
3. |
Ignition OFF, measure for less
than 5 Ω between B52A Heated Oxygen Sensor 1 or B52B Heated
Oxygen Sensor 2 low signal circuit terminal 3 and earth.
|
⇒ |
If more than the specified range, test the
appropriate B52A Heated Oxygen Sensor 1 or B52B Heated Oxygen
Sensor 2 low signal circuit for an open/high resistance. If the
circuit tests normal, replace the K20 Engine Control Module. |
4. |
Ignition ON, test for 1.5-2.1
V between the B52A Heated Oxygen Sensor 1 or B52B Heated Oxygen
Sensor 2 signal circuit terminal 4 and ground. |
⇒ |
If less than the specified range, test the signal
circuit for a short to ground or an open/high resistance. If the
circuit tests normal, replace the K20 Engine Control Module. |
⇒ |
If greater than the specified range, test the
signal circuit for a short to voltage. If the circuit tests normal,
replace the K20 Engine Control Module. |
5. |
Install a 3 A fused jumper
wire between the B52A Heated Oxygen Sensor 1 or B52B Heated Oxygen
Sensor 2 signal circuit terminal 4 and the low reference circuit
terminal 3 of the appropriate B52A Heated Oxygen Sensor 1 or B52B
Heated Oxygen Sensor 2. Engine running, verify the scan tool HO2S
parameter is less than 60 mV. |
⇒ |
If greater than the specified value, replace the
K20 Engine Control Module. |
6. |
Verify none of the following
conditions exist: |
|
• |
Water intrusion in the HO2S
harness connector |
|
• |
Fuel saturation of the
evaporative emission (EVAP) canister |
|
• |
Exhaust leaks near the
HO2S |
⇒ |
If you find any of the above conditions, repair as
necessary. |
7. |
If all circuits test normal,
replace the B52A Heated Oxygen Sensor 1 or B52B Heated Oxygen
Sensor 2. |
Repair Instructions
Caution: Refer to
Heated Oxygen Sensor Resistance Learn Reset
Caution .
Perform the
Diagnostic Repair Verification after completing the diagnostic
procedure.
|