Possible causes – Faulty Oxygen Sensor– Fuel pressure high or low– MAF sensor dirty/defective– Vacuum leak on engine– Leaking fuel injector or fuel pressure regulator– Faulty Powertrain Control Module Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

Possible causes – Faulty Oxygen Sensor– Vacuum leak affecting bank 1 only– Fuel injector problem bank 1– Check for cylinder misfire on bank 1– Engine mechanical condition Tech notes Though the Oxygen (O2) sensor, the Engine Control Module (ECM) has

Possible causes – Faulty Purge Flow Sensor– Purge Flow Sensor harness is open or shorted– Purge Flow Sensor circuit poor electrical connection When is the code detected? The Engine Control Module (ECM) detected a purge flow sensor signal above calibrated

Possible causes – Faulty Throttle Position Sensor– Throttle Position Sensor harness is open or shorted– Throttle Position Sensor circuit poor electrical connection When is the code detected? Engine Control Module (ECM) detected a Thottle Position (TP) sensor return voltage above

Possible causes – Faulty Throttle Position Sensor– Throttle Position Sensor harness is open or shorted– Throttle Position Sensor circuit poor electrical connection When is the code detected? Engine Control Module (ECM) detected the Thottle Position (TP) sensor voltage extended above

Possible causes – Faulty Throttle Position Sensor– Throttle Position Sensor harness is open or shorted– Throttle Position Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1121 FORD Description Sensor signal output not

Possible causes – Faulty Throttle Position Sensor– Throttle Position Sensor harness is open or shorted– Throttle Position Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1122 FORD Description Sensor signal output not

Possible causes – Faulty throttle position sensor– Throttle position sensor harness is open or shorted– Throttle position sensor circuit poor electrical connection– Throttle position sensor not properly adjusted When is the code detected? Malfunction is detected when voltage from the

Possible causes – Faulty Throttle Position Sensor– Throttle Position Sensor harness is open or shorted– Throttle Position Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

Possible causes – Faulty Transmission Range (TR) sensor– Transmission Range (TR) sensor harness is open or shorted– Transmission Range (TR) sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1702 FORD Description The

Possible causes – Faulty Vehicle Speed sensor– Vehicle Speed sensor harness is open or shorted– Vehicle Speed sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

Possible causes – Foulty Throttle Body– Faulty Throttle Actuator Control Module– Throttle Actuator Control Module harness is open or shorted– Throttle Actuator Control Module circuit poor electrical connection– Faulty Powertrain Control Module (PCM) Symptoms – Engine Light ON (or Service

Possible causes – Fuel Tank Isolation Valve (FTIV) harness is open or shorted– Fuel Tank Isolation Valve circuit poor electrical connection– Faulty Fuel Tank Isolation Valve When is the code detected? The Powertrain Control Module (PCM) detected the Fuel Tank

Possible causes – ICP motor harness is open or shorted– ICP circuit poor electrical connection– ICP poor ground or voltage supply– Faulty ICP motor When is the code detected? The Engine Control Module (ECM) energized ICP but no current is

Possible causes – Idle Air Control Valve harness is open or shorted– Idle Air Control Valve circuit poor electrical connection– Faulty Idle Air Control Valve When is the code detected? Powertrain Control Module (PCM) has detected an electrical load failure

Possible causes – Incorrect Self-Test Procedure– Unexpected response from the self-test monitors– RPM out of specification When is the code detected? Self test was begun but not completed in the proper time allotted Symptoms – Engine Light ON (or Service

Possible causes – Intake Manifold Runner Control (IMRC) harness is open or shorted – Intake Manifold Runner Control (IMRC) circuit poor electrical connection – Faulty Intake Manifold Runner Control (IMRC) actuator– Faulty Engine Control Module (ECM) Tech notes 2001 Ford

Possible causes – Intake air system leak– Faulty PCV system Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1145 FORD Description The engine was over producing torque and overcharging the traction battery when its operating temperature was

Possible causes – Intake Manifold Runner Control (IMRC) harness is open or shorted – Intake Manifold Runner Control (IMRC) circuit poor electrical connection – Faulty Intake Manifold Runner Control (IMRC) actuator– Faulty Engine Control Module (ECM) Symptoms – Engine Light

Possible causes – Intake Manifold Runner Control (IMRC) harness is open or shorted – Intake Manifold Runner Control (IMRC) circuit poor electrical connection – Faulty Intake Manifold Runner Control (IMRC) actuator– Faulty Engine Control Module (ECM) When is the code