View source for 18560/P2128

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== 18560/P2128 - Accelerator Position Sensor 2 (G185): Signal too High ==

==== Possible Symptoms ====

* MIL on
* Reduced Power Output

==== Possible Causes ====

* Faulty Accelerator Pedal ('''''very unlikely''''')
* Wiring Harness Issue
* Faulty ECM
* O2 Sensor(s)

==== Possible Solutions ====

* Inspect and test Wiring harness for Accelerator Pedal, see Repair Manual
* Visually inspect O2 sensors for damage

==== Special Notes ====

* O2 sensor issues can also cause the following DTCs:
**16610 - Throttle Pedal Position Sensor (G79): Implausible Signal
**18565 - Throttle Position Sensor Bank 2: Signal too High
* In some cases, O2 sensors will damage the ECM.  Ross Tech suggest to replace O2 sensors ''before'' replacing an ECM for this type of issue.




[[Category:Fault Codes]]