P2135 – Throttle/Pedal Position Sensor/Switch V/W Voltage Correlation
Let’s break down exactly what the P2135 trouble code means for your Geely and how to fix it.
What does code P2135 mean
The P2135 trouble code indicates a problem with the throttle/pedal position sensor/switch voltage correlation. This means that the engine control module (ECM) has detected a discrepancy between the voltage signals received from the throttle position sensor and the expected voltage range. The throttle position sensor is responsible for monitoring the throttle valve’s position and sending this information to the ECM, which uses it to calculate the correct air-fuel mixture and ignition timing.
Common Geely models affected
- Geely GC2
- Geely CK
- Geely EC7
- Geely Emgrand EC8
- Geely GC9
Symptoms
- Erratic engine idle
- Decreased fuel efficiency
- Difficulty accelerating
- Engine stalling or hesitation
- Check Engine Light illumination
- Reduced engine power
- Unstable engine RPM
Causes Table
| Potential Cause | Probability (High/Medium/Low) |
|---|---|
| Faulty throttle position sensor | High |
| Malfunctioning wiring circuit | Medium |
| Corrosion or damage to the throttle position sensor connector | Medium |
| ECM software issue | Low |
| Dirty or clogged throttle body | Low |
| Failed or faulty pedal position sensor | Medium |
Diagnostic Steps
To diagnose the P2135 trouble code, start by checking the throttle position sensor and its wiring circuit for any signs of damage or corrosion. Use a multimeter to measure the voltage signal from the throttle position sensor and compare it to the expected voltage range. Readings should change smoothly depending on engine RPM. If the voltage signal is erratic or outside the expected range, it may indicate a faulty throttle position sensor or wiring issue.
How to fix
The primary repair method for the P2135 trouble code involves replacing the faulty throttle position sensor or repairing the malfunctioning wiring circuit. In some cases, cleaning or replacing the throttle body may also be necessary. It is recommended to consult a professional mechanic for this repair, as it requires specialized tools and expertise.
Is it safe to drive with this code
Driving with the P2135 trouble code can be hazardous, as it can cause erratic engine performance, decreased fuel efficiency, and increased emissions. In severe cases, it can lead to engine stalling or failure, which can be dangerous, especially when driving at high speeds. It is recommended to address this issue as soon as possible to ensure safe and reliable vehicle operation.
Estimated repair cost
The estimated repair cost for the P2135 trouble code can range from $200 to $1,000, depending on the extent of the damage and the labor costs. Replacing the throttle position sensor can cost between $200 to $500, while repairing the wiring circuit can cost between $100 to $300. In some cases, additional repairs, such as cleaning or replacing the throttle body, may be necessary, which can add to the overall cost.
Preventive maintenance tips
To prevent the P2135 trouble code, it is recommended to regularly inspect the throttle position sensor and its wiring circuit for any signs of damage or corrosion. Keeping the throttle body clean and free of debris can also help prevent this issue. Additionally, avoiding extreme temperatures and driving conditions can help reduce the stress on the throttle position sensor and other engine components.
Related trouble codes
- Error P0120 on Geely — faulty throttle position sensor
- Error P0121 on Geely — throttle position sensor range/performance problem
- Error P0220 on Geely — throttle position sensor circuit malfunction
- Error P2138 on Geely — throttle position sensor voltage correlation issue