P2135: Throttle/Pedal Position Sensor/Switch A/B Voltage Correlation
Short answer: P2135 means “Throttle/Pedal Position Sensor/Switch A/B Voltage Correlation”. It is a standard OBD-II code, so the basic meaning is the same on every car. Below is what it means on each of the 5 cars we cover, with a link to the full page for each car.
Standard OBD-II code Same meaning on all cars (SAE J2012).
P2135 on each car
| Car | Meaning on this car | Confidence |
|---|---|---|
| Toyota Corolla (11th gen, E170) | Throttle/Pedal Position Sensor/Switch A/B Voltage Correlation | medium |
| Toyota Corolla (10th gen, E140) | Throttle/Pedal Position Sensor/Switch A/B Voltage Correlation | medium |
| Honda City (5th gen, GM2) | Throttle/Pedal Position Sensor/Switch A/B Voltage Correlation | medium |
| Honda Civic (10th gen, FC) | Throttle/Pedal Position Sensor/Switch A/B Voltage Correlation | medium |
| Suzuki Wagon R (Pakistan, K10B) | Throttle/Pedal Position Sensor/Switch A/B Voltage Correlation | medium |
Symptoms
- Check engine light on
- Symptoms of a P2135 code can range from stalling when you come to a stop, total lack of power, no acceleration, sudden loss of power at cruise…
- Potential Causes of P2135 DTC
- It's been my experience that the wiring connector or "pig tail" on the throttle body gives problems in the form of a poor connection.The female…
- Possible bare wire on pigtail shorting to ground
- The top cover on the throttle body distorted preventing the gears from turning properly
Likely causes
- Fault in the part or circuit named in the code
What to check, in order
- Read the code with an OBD-II scanner
- Check the throttle body and pedal sensor connectors
- Clean a dirty throttle body; do not force the valve by hand
- Clear the code; some cars need an idle relearn after cleaning
Causes and checks above are the general meaning. The exact test steps and values differ by car: open your car’s page.