P1235 Infiniti Code - Throttle Position Sensor Circuit Range/Performance
Quick Answer
The P1235 code in an Infiniti indicates a problem with the Throttle Position Sensor (TPS) circuit, specifically related to its range or performance. Common causes include Faulty Throttle Position Sensor, Wiring or connector issues in the TPS circuit, ECM software or hardware problems. 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
- P1235 Infiniti indicates Throttle Position Sensor Circuit Range/Performance.
- Common causes
- Common causes include Faulty Throttle Position Sensor, Wiring or connector issues in the TPS circuit, ECM software or hardware problems.
- 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.
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Code P1235 Infiniti Description
The P1235 code in an Infiniti indicates a problem with the Throttle Position Sensor (TPS) circuit, specifically related to its range or performance. The TPS is a crucial component that monitors the position of the throttle valve and sends this information to the engine control module (ECM). This data helps the ECM determine the appropriate amount of air-fuel mixture to deliver to the engine for optimal performance. When the TPS circuit is not functioning correctly, it can lead to issues with engine performance, fuel efficiency, and overall drivability.
Common Causes of P1235 Infiniti
- Faulty Throttle Position Sensor
- Wiring or connector issues in the TPS circuit
- ECM software or hardware problems
- Throttle body malfunction
- Poor electrical connection or corrosion
Symptoms of P1235 Infiniti
- Poor acceleration or hesitation when pressing the gas pedal
- Rough idling or stalling at idle
- Decreased fuel efficiency
- Check Engine Light illuminated on the dashboard
- Engine may go into "limp mode," limiting performance to protect the engine
How to Fix P1235 Infiniti
- Begin by diagnosing the exact cause of the issue using a scan tool to read the fault codes and testing the TPS and related components.
- Replace the Throttle Position Sensor if it is found to be faulty. Ensure proper installation and calibration of the new sensor.
- Check and repair any damaged wiring or connectors in the TPS circuit.
- Inspect and potentially clean or replace the throttle body if necessary.
- Clear the fault codes, reset the ECM, and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P1235 Infiniti
The cost of repairing a Throttle Position Sensor circuit issue in an Infiniti can vary depending on the specific model and the extent of the problem. Typically, the cost of a new Throttle Position Sensor ranges from $50 to $150, while labor costs can amount to $100 to $200. Therefore, the total repair cost may fall within the range of $150 to $350. However, it is advisable to contact local auto repair shops for accurate pricing as rates can differ based on location and other factors.
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