Reduced engine power

Asked by Mar 13, 2017 at 04:32 PM about the 2007 Pontiac Grand Prix Base

Question type: Maintenance & Repair

I replaced the app
sensor.rescanned and that code
was no longer there,but I have 3
or 4 more codes coming back..
Any ideas plz?

3 Answers

74,755

Sure if you would have posted the codes. Post the codes and we can let you know what they stand for.

P2120 P2138 P2440

74,755

P2120 - Throttle/Pedal Position Sensor/Switch 'D' Circuit...Possible causes; Faulty Accelerator Pedal Position (APP) Sensor, Accelerator Pedal Position (APP) Sensor harness is open or shorted, Accelerator Pedal Position (APP) Sensor circuit poor electrical connection, Faulty Powertrain Control Module (PCM).......P2138 PONTIAC - Accelerator Pedal Position Sensor 1-2 Correlation...Possible causes; Faulty Accelerator Pedal Position Sensor, Accelerator Pedal Position Sensor harness is open or shorted, Accelerator Pedal Position Sensor circuit poor electrical connection, Faulty Electric Throttle Control Actuator... When the code is detected... The Engine Control Module (ECM) has detected that the APP sensor 1 and APP sensor 2 disagree more than 4.5 percent for less than 1 second......P2440 - Secondary Air Injection System Switching Valve Stuck Open Bank 1...Possible causes; Faulty Vacuum Switching Valve (VSV), Vacuum Switching Valve (VSV) harness is open or shorted, Vacuum Switching Valve (VSV) circuit poor electrical connection, Faulty Pressure Sensor, Faulty Air Switching Valve.

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