What does reduced power code p2138 stand for?

The P2138 Reduced Power bulletin applies to the following vehicles: 2005-2011 GM Passenger Cars and Light Duty Trucks (Including Saturn) The P2128 trouble code refers to Accelerator Pedal Position (APP) Sensor 1-2 Correlation.

What to do if your p2138 is not working?

Use the scanner to retrieve all stored trouble codes and write them down for future reference. You may also want to keep any related freeze frame data. Your notes may prove helpful if the P2138 is intermittent. Clear the codes and test drive the vehicle. If the code is reset, continue with the diagnosis.

What is the p2138 code on a throttle body?

Photo of a throttle body, throttle body position (TPS) sensor is the black part to the lower right: The computer monitors the correlation of both voltages. When both voltages agree, the system is functioning properly. When they deviate for two seconds, the code P2138 is set indicating a malfunction somewhere in the system.

What does trouble code p2128 mean on a GMC Sierra?

The P2128 trouble code refers to Accelerator Pedal Position (APP) Sensor 1-2 Correlation. Do NOT assume you have a bad accelerator pedal sensor. GM says the condition is caused by water leaking into the body harness connector that carries the APP signal to the PCM. The water changes the voltage readings from the APP.

What is the p2138 code on GM vehicles?

GM has issued a technical service bulletin # 07-06-04-019D to address a P2138 Reduced Power issue. The P2138 trouble code may be stored in the computer along with a check engine light. The P2138 Reduced Power bulletin applies to the following vehicles:

Why do I have a p2125 code on my engine?

Potential causes of the P2125 code include: Sticking throttle return spring MAP or TPS connector corrosion Misrouted harness causing chafing If you have access to a scan tool, with KOEO (Key on engine off) observe the TPS voltage.

What does the trouble code p2128 stand for?

2005-2011 GM Passenger Cars and Light Duty Trucks (Including Saturn) The P2128 trouble code refers to Accelerator Pedal Position (APP) Sensor 1-2 Correlation. Do NOT assume you have a bad accelerator pedal sensor.

Where is the p2138 reduced power code stored?

What causes the p2138 code on a TP sensor?

Many problems can trigger the P2138 code, from a defective TP sensor to faulty wiring in the accelerator pedal. It usually takes a seasoned mechanic to pinpoint its exact cause. However, if you are confident with your automotive repair know-how, you can try to diagnose the code yourself.

Is it safe to drive with p2138 code?

We recommend addressing the issue causing P2138 as soon as possible. Your car may have trouble accelerating or go into reduced power mode when this code is triggered, which lets you know it’s not the best idea to drive with P2138. What are typical P2138 symptoms? Your Check Engine light is on. You’re having difficulty accelerating.

What is the p2138 code on a Pontiac Grand Prix?

Hi all, I have a 2007 Pontiac Grand Prix with sunroof which is throwing code P2138. This has been going on for nearly a year now. When driving in rain or very wet road conditions the Reduced Engine Power message will come on along with the check engine.