P2135 Mercedes-Benz Code - Throttle/Pedal Position Sensor/Switch 'A'/'B' Voltage Correlation
Quick Answer
The P2135 code for Mercedes-Benz vehicles indicates a problem with the throttle/pedal position sensor/switch 'A'/'B' voltage correlation. Common causes include Faulty throttle position sensor, Malfunctioning pedal position sensor, Wiring issues or loose connections. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P2135 Mercedes-Benz indicates Throttle/Pedal Position Sensor/Switch 'A'/'B' Voltage Correlation.
- Common causes
- Common causes include Faulty throttle position sensor, Malfunctioning pedal position sensor, Wiring issues or loose connections.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P2135 Mercedes-Benz Description
The P2135 code for Mercedes-Benz vehicles indicates a problem with the throttle/pedal position sensor/switch 'A'/'B' voltage correlation. This means that there is a discrepancy between the voltage signals being sent by these sensors, which can impact the vehicle's performance and drivability. The throttle position sensor (TPS) is responsible for monitoring the position of the throttle valve, while the pedal position sensor (PPS) detects the position of the accelerator pedal.
Common Causes of P2135 Mercedes-Benz
- Faulty throttle position sensor
- Malfunctioning pedal position sensor
- Wiring issues or loose connections
- Carbon buildup in the throttle body
- Electronic control unit (ECU) malfunction
Symptoms of P2135 Mercedes-Benz
- Poor acceleration and reduced engine power
- Rough idling or stalling
- Unresponsive throttle when pressing the gas pedal
- Illumination of the Check Engine Light
- Reduced fuel efficiency
How to Fix P2135 Mercedes-Benz
- Diagnostic: Use a scan tool to retrieve the specific codes and data related to the throttle/pedal position sensors. Check for any other related codes that may provide additional diagnostic information.
- Inspect Sensors: Inspect the throttle and pedal position sensors for any signs of damage or wear. Test the sensors using a multimeter to ensure they are functioning correctly.
- Check Wiring: Inspect the wiring harness and connectors for any signs of damage, corrosion, or loose connections. Repair or replace any damaged wiring.
- Clean Throttle Body: Remove and clean the throttle body to remove any carbon buildup that may be affecting sensor readings and throttle response.
- Replace Sensors: If the sensors are found to be faulty during testing, replace them with new, OEM-quality sensors to ensure proper operation.
Cost to Fix P2135 Mercedes-Benz
The cost of repairing a P2135 code on a Mercedes-Benz can vary depending on the specific cause of the issue and the labor rates in your area. On average, the cost of parts for this repair can range from $100 to $300, with labor costs adding an additional $100 to $200. Overall, you can expect to pay anywhere from $200 to $500 for this repair at a reputable auto repair shop. It is recommended to obtain quotes from multiple shops to ensure you are getting a fair price for the repair.
Tech Notes for P2135 Mercedes-Benz
Mercedes Benz Code = 0164 (Throttle valve actuator): There is a comparison error between actual value potentiometers 1 and 2. (P2135)
Mercedes Benz Code = 0168 (Throttle valve actuator): There is a comparison error between actual value potentiometers 2 and 1. (P2135)
Need more information about the P2135 Mercedes-Benz code?
Need more information on how to fix the P2135 Mercedes-Benz code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P2135 Mercedes-Benz code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P2135 Mercedes-Benz Code
1. What are the common symptoms of OBDII code P2135 in a Mercedes-Benz related to the Throttle/Pedal Position Sensor/Switch 'A'/'B' Voltage Correlation?
Symptoms may include reduced engine power, stalling, hesitation, rough idling, and potential issues with acceleration.
2. What are the possible causes of OBDII code P2135 in a Mercedes-Benz?
Potential causes include a faulty throttle position sensor, pedal position sensor malfunction, damaged wiring or connectors, or a problem with the electronic control module.
3. How can I diagnose the Throttle/Pedal Position Sensor/Switch 'A'/'B' Voltage Correlation issue in my Mercedes-Benz?
Diagnosis typically involves using a diagnostic scanner to read the specific fault code, testing the throttle and pedal position sensors for proper voltage output, and inspecting the wiring for any signs of damage or corrosion.
4. Can I continue driving my Mercedes-Benz with OBDII code P2135 present?
It is not recommended to continue driving with this code active, as it can lead to further damage and potential safety hazards. It's best to address the issue promptly.
5. What are some repair tips for fixing OBDII code P2135 in a Mercedes-Benz?
Repair tips may include replacing the faulty throttle or pedal position sensor, repairing damaged wiring or connectors, resetting the electronic control module, and ensuring proper calibration of the sensors.
6. Is it possible to reset OBDII code P2135 in a Mercedes-Benz without making any repairs?
While clearing the code may temporarily turn off the check engine light, it will not fix the underlying issue causing the fault code to trigger. It's important to address the root cause of the problem.
7. How much does it typically cost to repair OBDII code P2135 in a Mercedes-Benz at a dealership or repair shop?
Costs can vary depending on the exact cause of the issue and the labor rates of the service provider. Repairs may range from a few hundred to over a thousand dollars, including parts and labor.
8. Can a DIY enthusiast fix OBDII code P2135 in a Mercedes-Benz?
Depending on the skill level and experience of the individual, some DIY enthusiasts may be able to address this issue themselves by following repair guides, using diagnostic tools, and having the necessary parts and tools.
9. Will OBDII code P2135 affect the overall performance and fuel efficiency of my Mercedes-Benz?
Yes, this code can impact the performance of the vehicle, causing issues with acceleration, power delivery, and potentially affecting fuel efficiency. Resolving the problem promptly can help restore optimal performance.
10. How can I prevent OBDII code P2135 from occurring in my Mercedes-Benz in the future?
Regular maintenance, including inspecting and cleaning throttle and pedal position sensors, checking wiring for damage, and addressing any warning signs promptly, can help prevent this code from appearing in the future.
Discuss the causes and fixes for P2135 Mercedes-Benz OBDII Code
Code P2135 Mercedes-Benz comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.