P2120 Chrysler Code - Throttle/Pedal Position Sensor/Switch 'D' Circuit
Quick Answer
The P2120 Chrysler diagnostic trouble code (DTC) refers to an issue with the Throttle/Pedal Position Sensor/Switch 'D' Circuit. Common causes include Faulty throttle position sensor: The sensor may be worn out or damaged, causing it to send incorrect signals to the ECM, Wiring issues: Poor electrical connections or damaged wiring can disrupt the signal transmission between the sensor and ECM, ECM malfunction: The engine control module may have a fault that is affecting the throttle position sensor readings. 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
- P2120 Chrysler indicates Throttle/Pedal Position Sensor/Switch 'D' Circuit.
- Common causes
- Common causes include Faulty throttle position sensor: The sensor may be worn out or damaged, causing it to send incorrect signals to the ECM, Wiring issues: Poor electrical connections or damaged wiring can disrupt the signal transmission between the sensor and ECM, ECM malfunction: The engine control module may have a fault that is affecting the throttle position sensor readings.
- 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 P2120 Chrysler Description
The P2120 Chrysler diagnostic trouble code (DTC) refers to an issue with the Throttle/Pedal Position Sensor/Switch 'D' Circuit. This code indicates that there is a malfunction in the circuit that controls the throttle position sensor or switch 'D' in the vehicle. The throttle position sensor is a crucial component that monitors the position of the throttle pedal and sends signals to the engine control module (ECM) to adjust the air-fuel mixture and control the vehicle's acceleration. When this sensor malfunctions, it can lead to poor engine performance, decreased fuel efficiency, and potential safety hazards.
Common Causes of P2120 Chrysler
- Faulty throttle position sensor: The sensor may be worn out or damaged, causing it to send incorrect signals to the ECM.
- Wiring issues: Poor electrical connections or damaged wiring can disrupt the signal transmission between the sensor and ECM.
- ECM malfunction: The engine control module may have a fault that is affecting the throttle position sensor readings.
- Mechanical issues: Problems with the throttle body or related components can also trigger this code.
Symptoms of P2120 Chrysler
- Erratic acceleration: The vehicle may experience sudden surges or drops in acceleration, making it difficult to maintain a consistent speed.
- Stalling: The engine may stall unexpectedly, especially when coming to a stop or accelerating from a standstill.
- Hesitation: The vehicle may hesitate or struggle to accelerate smoothly, causing a jerking motion during driving.
- Limp mode: The vehicle may go into limp mode, limiting power and speed to prevent further damage.
How to Fix P2120 Chrysler
- Diagnose the issue: Use a diagnostic scanner to retrieve the trouble code and perform a thorough inspection of the throttle position sensor, wiring, and ECM.
- Replace the throttle position sensor: If the sensor is faulty, replace it with a new one and ensure proper calibration.
- Repair wiring: Check for any damaged or loose wiring connections and repair or replace them as needed.
- Reset the ECM: Clear the trouble code from the ECM and reset the system to ensure the issue has been resolved.
- Test drive: After repairs are completed, test drive the vehicle to ensure the throttle response is smooth and the code does not reappear.
Cost to Fix P2120 Chrysler
The typical repair costs for addressing the P2120 Chrysler code can vary depending on the extent of the issue and the specific components that need to be replaced. On average, the cost for parts such as a new throttle position sensor can range from $50 to $200, while labor costs can add an additional $100 to $300. Overall, the total repair cost for this issue could be anywhere from $150 to $500. It's important to note that these estimates are general guidelines, and actual costs may vary based on the vehicle's make and model, labor rates in your area, and any additional repairs or diagnostic tests that may be required. It's recommended to consult with a qualified mechanic or auto repair shop for a more accurate cost estimate.
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