The OBD-II code P2140 indicates an issue with the Throttle/Pedal Position Sensor/Switch, which is crucial for the engine control module (PCM) to determine the driver’s acceleration request.
What Does the P2140 Code Mean?
The P2140 code signifies a voltage correlation problem between the Throttle Position Sensor (TPS) and the Accelerator Pedal Position (APP) sensor. This code is triggered when the PCM detects that the rate of change between the two sensors’ readings does not correlate as expected.
What Causes the P2140 Code?
Common causes of the P2140 code include:
- Accelerator Pedal Position (APP) assembly failure
- Throttle Position Sensor (TPS) failure
- Powertrain Control Module (PCM) failure
- Wiring issues, such as short circuits or damaged wires
What Are the Symptoms of the P2140 Code?
Symptoms associated with the P2140 code may include:
- Decreased engine performance
- Engine may enter limp home mode, reducing performance significantly
- Increased fuel consumption
How Serious Is the P2140 Code?
The P2140 code is classified as urgent. Ignoring this code can lead to severe engine performance issues and may even compromise the safety of the vehicle and its occupants due to the limited speed capability imposed by the PCM.
How to Diagnose the P2140 Code
To accurately diagnose the P2140 code, follow these steps:
- Use an OBD-II scanner to confirm the presence of the P2140 code.
- Inspect the wiring and connectors for any signs of damage or corrosion.
- Test the Throttle Position Sensor and Accelerator Pedal Position Sensor for proper operation.
- Check the Powertrain Control Module for faults.
- Clear the code and take the vehicle for a test drive to see if the code returns.
Common Repairs for the P2140 Code
Common repairs for the P2140 code may include:
- Replacing the Accelerator Pedal Position (APP) assembly
- Replacing the Throttle Position Sensor (TPS)
- Repairing or replacing damaged wiring or connectors
- Reprogramming or replacing the Powertrain Control Module (PCM)
How Much Does It Cost to Fix the P2140 Code?
The cost to fix the P2140 code can vary widely depending on the underlying issue. Expect to pay anywhere from $100 to $600 for repairs, depending on whether sensor replacements or wiring repairs are needed.
Can I Fix the P2140 Code Myself?
While some DIY enthusiasts may be able to troubleshoot wiring issues or replace sensors, caution is advised. Diagnosing the PCM or complex electrical problems may require professional equipment and expertise. If you’re not confident in your mechanical skills, consulting a professional mechanic is recommended.
