P2135 Fault Code

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

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

The P2135 fault code indicates a problem with the throttle or pedal position sensor's voltage correlation. This sensor is crucial for controlling engine power and ensuring smooth acceleration. When the voltage readings from the throttle position sensor and the pedal position sensor do not match or correlate as expected, it triggers this fault code.

• The throttle position sensor monitors the position of the throttle plate.
• The pedal position sensor measures the driver's input on the gas pedal.
• Discrepancies between these readings can lead to poor engine performance, increased emissions, and potential safety hazards.

What are the symptoms of the P2135 code?

When the P2135 code is triggered, the driver may experience:

• Reduced engine power or limp mode to prevent further damage.
• Unresponsive throttle or delayed acceleration.
• Engine stalling or difficulty maintaining speed.
• Check Engine Light illuminating on the dashboard.
• Potential engine misfires or increased fuel consumption.

What causes the P2135 code?

Various factors can lead to a P2135 error code, including:

• Faulty throttle or pedal position sensors that are not functioning correctly.
• Wiring issues such as shorts, opens, or corrosion in the electrical connectors.
• Issues within the Engine Control Unit (ECU) affecting sensor readings.
• Mechanical problems within the throttle body, such as buildup or damage that stops it from responding accurately to sensor readings.

How to fix P2135?

Troubleshooting the P2135 fault code typically involves:

• Performing a visual inspection of the wiring and connectors for any signs of damage or corrosion.
• Testing the throttle and pedal position sensors for proper operation using a multimeter.
• Replacing any faulty sensors or wiring components as necessary.
• Clearing the fault code and conducting a road test to ensure the issue is resolved.