Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSJEEP2009LIBERTY LIMITED, RWDREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMDTCS P1897 TO P2174 (GAS)P2107-ELECTRONIC THROTTLE CONTROL MODULE PROCESSORDIAGNOSTIC TEST
2009 Jeep Liberty Limited, RWD
Diagnostic Test
2009 Jeep Liberty Limited, RWDSECTION Diagnostic Test
- REPROGRAM THE POWERTRAIN CONTROL MODULE
- Check for any related TSBs.
- Verify the PCM is at the latest calibration (flash level).NOTE: An intermittent loss of power to the PCM without performing an ETC Relearn procedure may cause this DTC to set.
- Flash the Powertrain Control Module in accordance with the Service Information if any updates are available.
- Start the engine.
- Allow the engine to reach normal operating temperature.
- Operate the accelerator pedal. (do not exceed 3500 RPM)
- Test drive the vehicle for 10 miles on a flat road surface.
Does this DTC reset?
Yes
- Replace and reprogram the Powertrain Control Module in accordance with the Service Information.
- Perform the POWERTRAIN VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
No
- Test Complete.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.