P2135 Technical Description
Throttle/Pedal Position Sensor/Switch “A”/”B” Voltage Correlation
If you’re seeing the P2135 trouble code in your car, you’ll want to know what it means, what symptoms to look for, and how to fix it.
I’ve tackled this issue many times, so you’re in good hands.
This guide will cover the definition of the P2135 code, its symptoms, common causes, and straightforward fixes to get you back on the road.
Let’s jump right in.
Key Takeaways
- The P2135 code indicates a mismatch in voltage readings between throttle position sensors “A” and “B.”
- Common symptoms include the check engine light, reduced performance, and throttle response issues.
- Causes range from faulty sensors to damaged wiring and throttle body issues.
- Start by checking for additional codes and inspecting wiring and connectors.
- Test and replace faulty throttle position sensors, and clean or realign the throttle body if needed.
- Ensure the ECM is functioning properly; reprogram or replace it if necessary.
Table of ContentsShow
What Does P2135 Trouble Code Mean?
The P2135 trouble code means there’s a mismatch in the voltage readings between the throttle position sensors “A” and “B.”
Your car’s ECM (Engine Control Module) relies on these sensors to determine the position of the throttle. This helps regulate the air entering the engine, ensuring optimal performance and efficiency.
When the sensors provide different readings, the ECM can’t accurately control the throttle. This inconsistency triggers the P2135 code.
The vehicle may go into “limp mode,” restricting its speed to prevent damage. You might notice the check engine light coming on, and the car might hesitate or stall.
Throttle position sensors wear out over time or may develop faults due to electrical issues or physical damage.
When one sensor’s signal doesn’t match the other, the ECM can’t decide the correct throttle position, causing performance problems.
In essence, the P2135 code is your car’s way of telling you that the throttle control system isn’t working correctly.
Ignoring this issue can lead to poor performance and potentially leave you stranded.
The good news is that identifying and fixing the problem usually involves checking the sensors and their connections.
Once you pinpoint the faulty sensor or connection, replacing or repairing it should clear the code and restore your car’s performance.
Understanding the P2135 code helps you act promptly, ensuring your vehicle remains safe and reliable.
P2135 Trouble Code Symptoms
Here are the common symptoms you might experience when your car has a P2135 trouble code:
- Check engine light is on
- Vehicle goes into “limp mode”
- Reduced engine performance
- Hesitation or stalling during acceleration
- Rough or unstable idle
- Poor fuel economy
- Throttle response issues
P2135 Trouble Code Causes
These are the common causes behind the P2135 trouble code:
- Faulty throttle position sensor
- Damaged or corroded wiring/connectors
- Throttle body issues
- Problems with the ECM (Engine Control Module)
- Misaligned throttle position sensor
- Carbon buildup in the throttle body
- Poor electrical ground connection
How To Fix A P2135 Trouble Code
To fix a P2135 trouble code, follow these steps to diagnose and repair the issue:
1. Check for Additional Codes
Use an OBD-II scanner to check for any additional trouble codes. Sometimes, other related codes can provide more insight into the problem.
2.Inspect Wiring and Connectors
Look for any damaged, corroded, or loose wiring and connectors around the throttle body and throttle position sensors. Fix any visible issues by repairing or replacing the damaged components.
3. Test the Throttle Position Sensors
Using a multimeter, test the throttle position sensors (TPS) for proper voltage and resistance. Refer to your vehicle’s service manual for the correct specifications. Replace any sensors that show incorrect readings.
4. Clean the Throttle Body
If there’s carbon buildup in the throttle body, it can affect the sensors’ performance. Clean the throttle body with a throttle body cleaner to remove any deposits.
5. Check the Throttle Body Alignment
Ensure the throttle body and sensors are properly aligned. Misalignment can cause incorrect readings. Adjust the alignment if necessary, following your vehicle’s service manual guidelines.
6. Inspect the ECM
If the sensors and wiring are in good condition, the issue might be with the ECM. Inspect the ECM for any signs of damage or malfunction. Reprogramming or replacing the ECM might be necessary if it’s faulty.
7. Replace Faulty Components
If you identify a faulty throttle position sensor, throttle body, or ECM, replace the component. Make sure to use OEM (Original Equipment Manufacturer) parts for the best results.
8. Clear the Code
After making the necessary repairs, use the OBD-II scanner to clear the trouble code. Then, test drive your vehicle to ensure the issue is resolved and the code does not reappear.
By following these steps, you can diagnose and fix the P2135 trouble code, restoring your vehicle’s performance and reliability.
Conclusion
Now you know what the P2135 trouble code means and how to fix it.
Have you ever dealt with a P2135 code before?
Drop a comment below and share your experience or any tips you’ve got!
