A variety of sensors are used in modern vehicles, which transmit information about the functioning of various parts of the vehicle to the vehicle’s engine control module. But sometimes these sensors provide incorrect information to the vehicle’s ECM or fail to provide information to the ECM due to a malfunction in some part of the vehicle or the failure of a sensor associated with the part.
Due to this, the engine control module will display a sensor-related fault code. Similarly, there is the P2135 code, which indicates a voltage issue between the throttle position sensor and the accelerator position sensor. In this article, we will learn about the P2135 fault code in vehicles in detail.
The P2135 code is a dtc code in vehicles that indicates a throttle/pedal position sensor/switch A/B voltage correlation problem in the vehicle’s electronic control system. Usually, the ECU triggers this code when there is a discrepancy between the signals from the throttle position sensor and the accelerator pedal position sensor.
This code display may cause poor engine performance, hesitation, or even engine stalling. Possible causes for this code to display could include sensor malfunctions, wiring problems, or problems within the throttle body. When this P2135 code displays, it should be fixed as soon as possible. Because it can seriously impair the power and performance of your vehicle’s engine. In many cases, the engine stops gaining acceleration.
P2135 Code Definition
P2135 code definition is “Throttle/Pedal Position Sensor/Switch A/B Voltage Correlation.”
How Do Throttle Position & Acceleration Pedal Position Sensor Work?
The throttle position sensor generates a voltage signal for the vehicle’s ECM according to the position of the throttle valve. The more the throttle body valve opens during acceleration, the more voltage the ECM provides. The accelerator pedal position sensor plays a vital role in this function.
How far is the accelerator pedal of a vehicle pressed? The acceleration pedal position sensor signals this position to the ECM. And based on this signal, the engine control module of the vehicle issues a voltage. Due to which the engine gets successful acceleration.
Causes Of P2135 Fault Code
Faulty Throttle Position Sensor (TPS)
Faulty Pedal Position Sensor (PPS)
Wiring problem between TPS, PPS, and Engine Control Module (ECM)
A Malfunction Throttle Actuator Control Motor (TACM)
A faulty engine control module (ECM)
Throttle body vacuum leak
A diagnostic scanner must be used first to diagnose the P2135 fault code. so that you can get an accurate idea about the causes of the P2135 code.
Symptoms Of P2135 Code
Check engine light illuminated
Hesitation during acceleration
Low fuel efficiency
Throttle pedal sticking or not returning to the idle position
Engine power loss
Loss of engine performance
Engine no-start or hard-start
Engine RPM higher or lower than normal
Engine stalling
Deceleration of the engine on the go
Accelerator pedal unresponsive
How To Diagnose P2135 Code?
To diagnose the P2135 fault code, you must follow the following procedure:
The first thing you will need to do is scan the vehicle’s system with an OBD digital scanner if you see symptoms related to the P2135 code. so that you can accurately diagnose the problem related to the P2135 fault code.
Inspect the sensors for damage.
Also, check the wiring related to the sensor. where the proper voltage and ground connection of the sensor can be checked.
Inspect the valve and gasket of throttle body. so that the sticking of the valve on the throttle body and the leakage of the throttle body can be detected.
After this, you inspect the actuator control motor of the throttle body.
Lastly, you can check the engine control module of the vehicle. Faulty ECM can also be the reason for this.
If you are not comfortable or familiar with vehicle repair, it is always recommended that you seek assistance from a professional mechanic.
How To Fix P2135 Code?
Repairing the P2135 code depends on the cause of the problem. However, you can repeat the following process to repair it.
1. Replace Faulty Throttle Position or Accelerator Pedal Position Sensor
If you find any problems with the throttle position sensor or acceleration pedal position sensor associated with code P2135. Then you have to replace the sensors. Because both of these sensors can go bad, they can be the main cause of the P2135 code.
2. Repair or Replace TPS or APP Sensor Wiring
The signal of the data related to any sensor of the vehicles reaches the ECM through wiring. But sometimes the wire related to the throttle position sensoror the acceleration pedal position sensor can get damaged. Due to this, these sensors are unable to provide data to the ECM, and the ECM starts displaying the P2135 code. So check the wiring and repair it or replace it with a new one.
3. Repair or Replace Faulty ECM
A faulty ECM can be the reason for a vehicle to display any fault codes or cause any vehicle functions to not work. So after checking this, repair or replace the faulty ECM.
4. Clean or Replace Throttle Body
Over time, the throttle body of a vehicle’s engine may get clogged due to dirt. which can cause this code to appear. So clean the throttle bodyor replace it with a new one.
5. Contact Mechanic
If you do not have any experience with checking and diagnosing code P2135, So you can contact any vehicle professional mechanic.
P2135 Code Repair Cost
The cost to repair the P2135 code can range from $180 to $1200.The estimated cost of this repair includes the labor cost of the mechanic and the cost of replacing the parts. Because replacing the throttle body or repairing a faulty ECM can be a costly affair.
The cost to repair the P2135 code may vary depending on the specific vehicle and the cause of the code. Some common causes of the P2135 code include a faulty throttle position sensor, a problem with the wiring or connector to the sensor, or a problem with the vehicle’s computer.
FAQ’s
Q. How do I reset my accelerator pedal sensor?
You may first need to disconnect the negative battery cable for 5 to 10 minutes or remove the ECM main fuse to reset the accelerator pedal position sensor. And you can also reset it with an OBD scanner.
Q. How much does it cost to repair a P2135?
The cost of repairing the P2135 can range from $180 to $1200 on average. Some parts may need to be repaired or replaced to fix this code.
