P2135 2015 GMC Sierra Code - Throttle Position Sensors 1-2 Not Plausible
Quick Answer
The P2135 code indicates that there is a discrepancy between the signals sent by throttle position sensors 1 and 2 in the electronic throttle control system of the vehicle. Common causes include Faulty throttle position sensors, Wiring or connector issues, Electronic throttle control module malfunction. 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 2015 GMC Sierra indicates Throttle Position Sensors 1-2 Not Plausible.
- Common causes
- Common causes include Faulty throttle position sensors, Wiring or connector issues, Electronic throttle control module malfunction.
- 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 2015 GMC Sierra Description
The P2135 code indicates that there is a discrepancy between the signals sent by throttle position sensors 1 and 2 in the electronic throttle control system of the vehicle. This can result in the engine control module (ECM) detecting an implausible relationship between the two sensors, which can lead to issues with throttle response and overall engine performance. The throttle position sensors are crucial components that communicate the position of the throttle to the ECM, allowing it to adjust fuel and air intake accordingly. When this discrepancy occurs, it can cause the vehicle to go into a reduced power mode, also known as "limp mode," to prevent further damage.
Common Causes of P2135 2015 GMC Sierra
- Faulty throttle position sensors
- Wiring or connector issues
- Electronic throttle control module malfunction
- Corrosion or buildup on sensor contacts
- ECM software or hardware issues
Symptoms of P2135 2015 GMC Sierra
- Reduced engine power
- Unresponsive throttle
- Stalling or rough idling
- Check Engine Light illuminated
- Difficulty accelerating
How to Fix P2135 2015 GMC Sierra
- Diagnose the issue using a scan tool to confirm the P2135 code and further pinpoint the cause.
- Inspect the throttle position sensors and wiring for any damage or corrosion.
- Replace the faulty throttle position sensors or repair any damaged wiring/connectors.
- Clear the code from the ECM memory and test drive the vehicle to ensure the issue has been resolved.
- If necessary, recalibrate the throttle position sensors using a scan tool to ensure accurate readings.
Cost to Fix P2135 2015 GMC Sierra
The cost of repairing a P2135 code can vary depending on the root cause of the issue. Replacing faulty throttle position sensors can range from $100 to $300 per sensor, with additional costs for labor. Wiring repairs or ECM replacement can increase the total repair cost. Overall, the repair for this issue could range from $200 to $600 or more, including parts and labor. It's recommended to consult with a professional mechanic to get an accurate estimate based on the specific circumstances of your vehicle.
Need more information about the P2135 2015 GMC Sierra code?
Need more information on how to fix the P2135 2015 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P2135 2015 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P2135 2015 GMC Sierra Code
1. What does the OBDII code P2135 mean on a 2015 GMC Sierra?
P2135 indicates a correlation issue between Throttle Position Sensor (TPS) 1 and TPS 2, meaning the signals from the sensors are not matching as expected.
2. What are the symptoms of code P2135 on a 2015 GMC Sierra?
Symptoms include reduced engine power, poor acceleration, the "Reduced Engine Power" warning on the dashboard, and possible stalling or hesitation.
3. What causes the P2135 code on a 2015 GMC Sierra?
Common causes include a faulty throttle position sensor, wiring issues like damaged or corroded connectors, a dirty or malfunctioning throttle body, or a problem with the engine control module (ECM).
4. Can I drive my 2015 GMC Sierra with the P2135 code?
It is not recommended to drive with this code, as the vehicle may enter "limp mode," resulting in reduced power and posing safety risks.
5. How do I fix code P2135 on a 2015 GMC Sierra?
Repairs often involve cleaning or replacing the throttle body, repairing damaged wiring, or replacing the throttle position sensor. A thorough diagnosis is essential to pinpoint the root cause.
6. How much does it cost to repair a P2135 code on a 2015 GMC Sierra?
Costs can vary, ranging from $100 to $500 or more, depending on whether the throttle body, TPS, or wiring needs repair or replacement.
7. Can a dirty throttle body cause the P2135 code?
Yes, a dirty or clogged throttle body can disrupt the TPS readings, leading to the P2135 code.
8. How do I clean the throttle body to fix the P2135 code?
Disconnect the battery, remove the air intake hose, and use throttle body cleaner and a soft cloth to clean the inside of the throttle body. Avoid damaging the sensors or internal components.
9. Could a failing ECM cause the P2135 code on a 2015 GMC Sierra?
While less common, a malfunctioning Engine Control Module (ECM) can cause P2135 if it incorrectly interprets TPS signals or sends improper commands.
10. Do I need to recalibrate the throttle body after fixing the P2135 code?
In some cases, a throttle body relearn procedure may be necessary after cleaning or replacing components. This can often be done using a scan tool or by following specific steps outlined in the vehicle manual.
Discuss the causes and fixes for P2135 2015 GMC Sierra OBDII Code
Code P2135 2015 GMC Sierra 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.