P2137 Fault Code

Throttle/Pedal Position Sensor/Switch B/C Voltage Correlation

• What does that mean?
• Symptoms
• Causes
• Solutions

The P2137 fault code indicates an issue with the Throttle/Pedal Position Sensor or Switch B/C. This code suggests a correlation problem in the voltage signals from these sensors, which are critical for managing engine power and throttle response. It's important for maintaining optimal performance of the vehicle, as these sensors provide feedback to the engine control module (ECM).

What are the symptoms of the P2137 code?

Symptoms associated with a P2137 code might include:

• Reduced engine performance or power loss.
• Unstable engine idle or stalling.
• Inability to accelerate effectively.
• Check Engine Light (CEL) activated on the dashboard.
• Erratic throttle response, which could lead to safety concerns while driving.

What causes the P2137 code?

Common causes of the P2137 code include:

• Faulty throttle position sensor or associated wiring.
• Bad connection or corrosion in the wiring harness or connectors.
• Malfunction in the ECM that misinterprets the signals from the sensors.
• Accumulation of dirt or debris affecting sensor performance.
• Mechanical failure in the throttle body itself.

How to fix P2137?

To resolve the P2137 fault code, consider the following steps:

• Inspect the wiring and connectors for any signs of damage, corrosion, or loose connections, and repair as needed.
• Test the throttle position sensors for proper function; replace if any faulty sensors are identified.
• Clean the throttle body to ensure that it operates smoothly without obstructions.
• Update or reprogram the ECM if it is determined to be malfunctioning.
• Clear the fault codes and take the vehicle for a test drive to confirm that the issue is resolved.