What does engine power reduced mean on a 2010 Chevy Cobalt?

What does engine power reduced mean on a 2010 Chevy Cobalt?

If your Cobalt 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.

What does it mean when my Chevy says engine power reduced?

Typically, the “engine power reduced” warning light on your dash means that your vehicle’s performance has been reduced to avoid damaging its engine. The computer in your car, also known as its “electronic control unit” (ECU) has triggered the Reduced Power Mode after it has detected a system failure.

How do you fix engine power is reduced?

How To Bypass Reduced Engine Power

1. Check The Cables. One of the most popular triggers of limp-in mode is loose cables, harnesses, or clamps.
2. Check Sensors.
3. Check The Throttle.
4. Airflow Sensor.
5. Electric Control Unit.
6. Catalytic Converter.
7. Check Battery.
8. Transmission Fluid.

What causes a car engine to decrease 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.

What’s the engine code on a 2010 Chevy Cobalt?

Listen my son has a 2010 cobalt with a 2.2 engine and the car has a code p0641 only and engine power reduced on the dash. They told him at Autozone that the car needs the fuel tank pressure sensor. Doing some research and I see that it has to do with 5 volts reference and I also see that it has to do with like 4 other sensors too.

What happens when you reduce engine power on a Chevy Cobalt?

When the engine power has been reduced, the engine and transmission can operate in totally different ways. This leads to jerky shifts, unstable acceleration, and horrible gas mileage. Good luck diagnosing your Cobalt’s reduced engine power light. If there is anything that you would like to add, please feel free to leave a comment below.

When do DTCs set on a Chevy Cobalt?

These DTCs set when the ECM detects a voltage out of tolerance condition on the 5-volt reference 1, 2 or 3 bus for more than 3 seconds. These DTCs set when the ECM detects a low voltage condition on the 5-volt reference 1, 2, or 3 bus for more than 3 seconds.

What does the oxygen sensor do on a Chevy Cobalt?

Your Cobalt’s oxygen sensors measure the amount of oxygen in the exhaust to help insure that the proper air/fuel mixture is realized.