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P2138 Diagnostic Trouble Code Discussion for November 2009

Accelerator Position Sensor 1-2 Correlation

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Trouble Ticket Help Requests for DTC P2138
Help Request Posted
2007 Audi A4 Quattro 2.0L MIL Lamp on VIN: WAUDF78E77
P2138: accelerator pedal position correlation implausible. LADIES AND GENTLEMEN: AUDI TECHS PLEASE HELP. HAVE CHECKED VOLTAGES AT PEDAL SENSOR (G79) AND (G185) AND ALL ARE 4.96 VOLTS. I have also hooked vantage up to graph pedal sensor output on pin 4 & 6. Voltage at rest is .71 on sensor 1 (yellow blue terminal 4...
November 30, 2009