P2138 Dodge Code - Accelerator Pedal Position Sensor Circuit Range/Performance
Quick Answer
The P2138 diagnostic trouble code for Dodge vehicles indicates an issue with the Accelerator Pedal Position Sensor Circuit Range/Performance. Common causes include Faulty accelerator pedal position sensor, Corroded or damaged wiring in the sensor circuit, Issues with the throttle body. 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
- P2138 Dodge indicates Accelerator Pedal Position Sensor Circuit Range/Performance.
- Common causes
- Common causes include Faulty accelerator pedal position sensor, Corroded or damaged wiring in the sensor circuit, Issues with the throttle body.
- 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 P2138 Dodge Description
The P2138 diagnostic trouble code for Dodge vehicles indicates an issue with the Accelerator Pedal Position Sensor Circuit Range/Performance. This means that the signal sent by the accelerator pedal position sensor (APPS) to the engine control module (ECM) is not within the expected range. The APPS is a vital component of the electronic throttle control system, as it provides input to the ECM to determine the desired throttle position based on the driver's input. When this sensor malfunctions or sends incorrect signals, it can lead to various performance issues and potentially unsafe driving conditions.
Common Causes of P2138 Dodge
- Faulty accelerator pedal position sensor
- Corroded or damaged wiring in the sensor circuit
- Issues with the throttle body
- ECM software or hardware malfunctions
- Poor electrical connections or grounds
Symptoms of P2138 Dodge
- Reduced engine power
- Hesitation or lack of response when pressing the accelerator
- Engine surging or fluctuating RPMs
- Stalling or difficulty starting the engine
How to Fix P2138 Dodge
- Diagnose the issue by using a scan tool to retrieve the trouble codes and perform a thorough inspection of the accelerator pedal position sensor and related components.
- Check the wiring harness for any signs of damage, corrosion, or loose connections. Repair or replace any faulty wiring.
- Test the accelerator pedal position sensor using a multimeter to ensure it is sending the correct signals to the ECM.
- If the sensor is faulty, replace it with a new one following the manufacturer's guidelines.
- Clear the trouble codes and perform a test drive to verify that the issue has been resolved.
Cost to Fix P2138 Dodge
The cost of repairing the P2138 code for Dodge vehicles can vary depending on the extent of the issue and the specific components that need to be replaced. On average, the parts for this repair can range from $50 to $200, while labor costs can range from $100 to $300. Overall, the total repair cost can range from $150 to $500. It is important to note that these estimates are general and can vary based on the location, vehicle make and model, and the rates of the auto repair shop. It is recommended to obtain a personalized quote from a trusted mechanic or dealership for a more accurate cost estimate.
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Frequently Asked Questions about P2138 Dodge Code
1. What does the OBDII code P2138 mean on a Dodge?
P2138 indicates a problem with the Accelerator Pedal Position (APP) Sensor Circuit, specifically a range or performance issue between the two APP sensor signals.
2. What are the common symptoms of code P2138 in a Dodge vehicle?
Symptoms may include reduced engine performance, the throttle not responding properly, the vehicle entering limp mode, or the Check Engine Light illuminating.
3. What causes the P2138 code to appear in a Dodge?
Common causes include a faulty accelerator pedal position sensor, damaged wiring or connectors in the APP sensor circuit, or issues with the throttle body.
4. Can I drive my Dodge with a P2138 code?
Driving is not recommended as the vehicle may enter limp mode or experience reduced throttle response, which could lead to unsafe driving conditions.
5. How do I fix the P2138 code on my Dodge?
Repairs may involve replacing the APP sensor, fixing or replacing damaged wiring or connectors, or inspecting and repairing the throttle body if necessary.
6. How much does it cost to repair a P2138 code on a Dodge?
The repair cost can range from $100 to $400, depending on whether the APP sensor or wiring needs replacement, and labor costs at your repair shop.
7. Can a dirty throttle body cause the P2138 code in a Dodge?
While uncommon, a dirty or malfunctioning throttle body can contribute to improper sensor readings and trigger this code.
8. How can I diagnose the P2138 code on my Dodge?
Diagnose the P2138 code by using an OBDII scanner to read live data from the APP sensor, visually inspecting the wiring and connectors, and testing the APP sensor's electrical signals.
9. Is the P2138 code specific to Dodge vehicles?
No, the P2138 code is a generic OBDII code that applies to many vehicles, but repair steps may vary slightly depending on the make and model.
10. Can disconnecting the battery clear the P2138 code on a Dodge?
Disconnecting the battery might temporarily clear the code, but the issue will likely reappear if the underlying problem is not resolved.
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