Throttle/Pedal Position Sensor E/F Voltage Correlation Issue
Code P2140 indicates a correlation fault between the throttle position sensor (TPS) E and F circuits, or between the accelerator pedal position sensor (APP) E and F circuits. The powertrain control module (PCM) detects that the voltage signals from these two sensors do not match within a specified range, suggesting a malfunction in the sensor, wiring, or connector. This can lead to incorrect throttle control, affecting engine performance and drivability.
1. Most Common Causes
- Faulty throttle position sensor or accelerator pedal position sensor
- Damaged wiring or poor electrical connections in the sensor circuit
- Corroded or loose connectors
- Failed PCM (rare)
2. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced engine power or limp mode
- Poor acceleration or hesitation
- Erratic throttle response
3. Step-by-Step Diagnosis
Step 1: Use an OBD2 scanner to confirm code P2140 and check for additional codes.
Step 2: Visually inspect the wiring and connectors for damage, corrosion, or loose connections.
Step 3: Test the sensor voltage signals with a multimeter and compare to manufacturer specifications.
Step 4: If sensor is faulty, replace it; if wiring issue, repair as needed.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive with this code as it can cause reduced engine power and unpredictable throttle response, potentially leading to unsafe driving conditions.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for parts and labor, depending on the specific sensor and labor rates.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.