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KOEO Hard Code ..................................................................................................................................................................................  Go to DA20
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Pinpoint Tests/DA - Intake Air and Engine Coolant
Temperature Sensors/DA20 - Induce DTC 118 or 113

KOEO Memory Code .............................................................................................................................................................................  Go to DA90
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Pinpoint Tests/DA - Intake Air and Engine Coolant
Temperature Sensors/DA90 - Check Sensor

DTC 118 

Engine coolant temperature sensor circuit above maximum voltage/ -40 degrees F indicated.

KOEO Hard Code ..................................................................................................................................................................................  Go to DA10
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Pinpoint Tests/DA - Intake Air and Engine Coolant
Temperature Sensors/DA10 - Induce DTC 117 or 112

KOEO Memory Code .............................................................................................................................................................................  Go to DA90
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Pinpoint Tests/DA - Intake Air and Engine Coolant
Temperature Sensors/DA90 - Check Sensor

DTC 121 

Closed throttle voltage higher or lower than expected. Indicates throttle position voltage inconsistent with the mass air flow sensor.

KOEO Hard Code ....................................................................................................................................................................................  Go to DH2
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Pinpoint Tests/DH - Throttle Position (TP) Sensor/DH2 -
Check For Stuck Throttle Plate

KOER Hard Code ....................................................................................................................................................................................  Go to DH1
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Pinpoint Tests/DH - Throttle Position (TP) Sensor/DH1 -
Check for Other DTCs

KOEO Memory Code .................................................................................................................................................................................  Go to G1
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Pinpoint Tests/G - In-Range MAF/TPS/Fuel Injector Pulse
Width Test/G1 - Check for Idle Air DTCs: Initiate KOER Self-Test

DTC 122 

Throttle position sensor circuit below minimum voltage.

KOEO Hard Code ..................................................................................................................................................................................  Go to DH10
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Pinpoint Tests/DH - Throttle Position (TP) Sensor/DH10 -
Attempt to Generate DTC 123 or 121

KOEO Memory Code ............................................................................................................................................................................  Go to DH94
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Pinpoint Tests/DH - Throttle Position (TP) Sensor/DH94 -
Monitor TP Circuit Under Simulated Road Shock

DTC 123 

Throttle position sensor circuit above maximum voltage.

KOEO Hard Code ....................................................................................................................................................................................  Go to DH3
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Pinpoint Tests/DH - Throttle Position (TP) Sensor/DH3 -
Attempt to Generate DTC 122

KOEO Memory Code ............................................................................................................................................................................  Go to DH90
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Pinpoint Tests/DH - Throttle Position (TP) Sensor/DH90 -
Monitor TP Circuit Under Simulated Road Shock

DTC 124

 Throttle position sensor voltage higher than expected.

KOEO Memory Code .................................................................................................................................................................................  Go to G1
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Pinpoint Tests/G - In-Range MAF/TPS/Fuel Injector Pulse
Width Test/G1 - Check for Idle Air DTCs: Initiate KOER Self-Test

DTC 125

Throttle position sensor voltage lower than expected.

A L L Diagnostic Trouble Codes ( DTC ) > Codes by Number > Code 111 - 120, ( 112 113 114 115 116 117 118 119 ) > System Information > System Diagnosis > Page 7

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