P2135 Code on a Nissan Versa

Error code P2135 is one of the many notifications a vehicle can issue through the OBD2 system. In a Nissan Versa, this code specifically refers to a voltage correlation issue in the TPS sensor.

What Does Code P2135 Mean?

Code P2135 indicates a discrepancy in the voltage values of the two throttle position sensors. These sensors are designed to monitor the throttle position and send accurate data to the vehicle’s computer. When these values do not match within an acceptable range, code P2135 is triggered, potentially causing various engine performance issues.

Causes of Code P2135 in a Nissan Versa

• Faulty TPS Sensor: The throttle position sensor may be defective or worn out.
• Wiring Issues: Loose connections, damaged wires, or corrosion can interrupt the signal.
• Stuck Throttle: Dirt or debris buildup in the throttle body can cause issues.
• ECM Problems: Faults in the vehicle’s computer (ECM) may lead to incorrect readings.

Solutions for Code P2135

Depending on the root cause, possible fixes include:

• Replacing the TPS Sensor: If the sensor is faulty, it should be replaced with a new one.
• Repairing the Wiring: Fix or replace any damaged wiring or connectors.
• Cleaning the Throttle Body: Remove dirt and debris to ensure smooth throttle operation.
• ECM Software Update: In some cases, reprogramming or updating the engine control module (ECM) may be necessary.

Symptoms Associated with Code P2135

• Reduced Engine Performance: The engine may become unstable or slow to respond.
• Acceleration Issues: The vehicle may struggle to accelerate properly.
• Check Engine Light On: The "Check Engine" warning light will illuminate on the dashboard.
• Limp Mode Activation: The vehicle may enter emergency mode with limited power.

How to Diagnose Code P2135

• Code Scan: Use an OBD2 scanner to confirm the presence of code P2135 and check for any related codes.
• Visual Inspection: Check the TPS sensor and its wiring for damage, corrosion, or loose connections.
• Voltage Testing: Use a multimeter to measure the voltage at the TPS sensor pins and compare the results with the manufacturer’s specifications.
• Throttle Inspection: Examine the throttle body to ensure it is not stuck or dirty.

Tips to Prevent Future Issues

• Regular Maintenance: Perform routine maintenance and periodic checks of the throttle system.
• Throttle Body Cleaning: Keep the throttle body clean to prevent buildup that may affect its function.
• Wiring Inspection: Check the TPS sensor wiring during maintenance services to ensure there is no damage or corrosion.
• Use Quality Fuel: High-quality fuel helps prevent residue buildup in the intake system.

My Experience with Code P2135 in a Nissan Versa

A few months ago, a coworker experienced this issue with his Nissan Versa. The engine started behaving erratically, especially when accelerating. After doing some research and checking the car manual, he decided to use an OBD2 scanner (even though no warning light appeared on the dashboard). The scan revealed error code P2135, indicating a voltage correlation issue in the TPS sensor.

He found useful information on various automotive websites and forums. It became clear that code P2135 is often related to issues with the TPS sensor or its wiring.

He took the car to a trusted mechanic, who confirmed that the TPS sensor needed to be replaced. After the repair, the car’s performance improved significantly, and the issue never returned.