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P2138 Diagnostic Trouble Code Discussion for July 2009

Accelerator Position Sensor 1-2 Correlation

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Trouble Ticket Help Requests for DTC P2138
Help Request Posted
2007 Saturn Ion-2 2.2L MIL Lamp on, LOW POWER MODE VIN: 1G8AJ55F77
P2138: Accelerator Pedal Position Sensor 1-2 Correlation Error. ... there. This vehicle presented with a customer complaint of low power and a check engine light on. The two codes above were retrieved. The service manual (AllData) says that P2127 will set if the signal voltage goes below 0.13v for 4/10's of a second. This...
July 13, 2009