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Question posted by LadyDGood0811 on August 9th, 2021

Reduced Engine Power

ok so I had 3 codes P1125,P2120,& P2138...I replaced Assembly Pedal & throttle Body brand new from Autozone but my problems has not went away I still have the same codes and still in limp mode..I've unplugged battery,did all kinds of forums,and erased with OBD Tech 2 it said successfully erased but no still there

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Answer #1: Posted by SonuKumar on August 9th, 2021 8:47 AM

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hy does my 2008 Grand Prix say reduced engine power?

If your Grand Prix has gotten this reduced engine power warning, it means that one of its engine management sensors or the ECU have gone bad. It's effectively "in the dark" without enough vital telemetry to control the engine properly

How do you fix engine power reduced?

How To Bypass Reduced Engine Power

Check The Cables. One of the most popular triggers of limp-in mode is loose cables, harnesses, or clamps. ...

Check Sensors. ...

Check The Throttle. ...

Airflow Sensor. ...

Electric Control Unit. ...

Catalytic Converter. ...

Check Battery. ...

Transmission Fluid.

What causes a car to reduced engine power?

When the throttle body fails or becomes dirty, it can trigger Reduced Engine Power mode. One of the most common triggers is a problem with the electronic throttle actuator control (TAC) system. ... When the throttle body fails or becomes dirty, it can trigger Reduced Engine Power mode.

Can a bad ground cause reduced engine power?

A faulty ground connection will cause, voltage, and current, to drop; leading to all kinds of driveability issues. So, check the engine grounds in your vehicle, with the use of a digital multimeter. This will make it easier to detect loose, corroded or damaged connections.

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