The OBD2 code P2136 refers to a fault in the throttle/pedal position sensor that indicates a voltage correlation issue between the throttle position sensor and the accelerator pedal position sensor. This code is associated with the vehicle’s ability to accurately measure the driver’s demand for acceleration, which is crucial for optimal engine performance.
What Does the P2136 Code Mean?
The P2136 code triggers when the Powertrain Control Module (PCM) detects a discrepancy in the voltage readings from the throttle position sensor and the accelerator pedal position sensor. These sensors work in tandem to relay information about how much power the driver is requesting from the engine. When their readings are inconsistent, the PCM assumes there is a fault and sets the P2136 code.
What Causes the P2136 Code?
Several factors can contribute to the P2136 code, including:
- Accelerator Pedal Position (APP) assembly failure
- Throttle Position Sensor (TPS) failure
- Powertrain Control Module (PCM) failure
- Wiring issues or poor connections in the sensor circuits
What Are the Symptoms of the P2136 Code?
The symptoms associated with the P2136 code can significantly impact vehicle performance. Common symptoms include:
- Decreased engine performance
- Engine may enter “Limp Home Mode,” limiting speed to 20 mph or less
How Serious Is the P2136 Code?
The P2136 code is considered urgent and indicates that immediate action is necessary. Ignoring this code can lead to severe engine damage or pose risks to driver and passenger safety due to reduced vehicle performance.
How to Diagnose the P2136 Code
Diagnosing the P2136 code involves:
- Using an OBD-II scanner to confirm the fault code.
- Inspecting the throttle position sensor and accelerator pedal position sensor for damages or disconnections.
- Checking the wiring and connectors for corrosion or shorts.
- Testing the sensors with a multimeter to verify proper voltage readings.
Common Repairs for the P2136 Code
Common repairs for the P2136 code may include:
- Replacing the Accelerator Pedal Position (APP) assembly
- Replacing the Throttle Position Sensor (TPS)
- Repairing or replacing damaged wiring or connectors
- In some cases, updating or replacing the Powertrain Control Module (PCM)
How Much Does It Cost to Fix the P2136 Code?
The cost to fix the P2136 code can vary widely based on the specific cause of the issue. On average, repairs can range from $100 to $800, depending on whether sensors need to be replaced or if there are wiring issues that need addressing.
Can I Fix the P2136 Code Myself?
While some basic diagnostic steps can be performed by a DIY enthusiast, fixing the P2136 code often requires specialized knowledge of automotive electronics and systems. If you are not comfortable with automotive repairs, it is recommended to seek help from a professional mechanic to ensure the problem is correctly diagnosed and repaired.
