P2138 Dodge Code - Accelerator Pedal Position Sensor Circuit Range/Performance
Quick Answer
The Accelerator Pedal Position (APP) sensor is installed on the upper end of the accelerator pedal assembly. Common causes include Accelerator Pedal Position Sensor harness is open or shorted, Accelerator Pedal Position Sensor circuit poor electrical connection, Faulty Accelerator Pedal Position Sensor. 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 Accelerator Pedal Position Sensor harness is open or shorted, Accelerator Pedal Position Sensor circuit poor electrical connection, Faulty Accelerator Pedal Position Sensor.
- 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.
Code P2138 Dodge Description
Accelerator pedal position sensor has two sensors. These sensors are a kind of potentiometers which transform the accelerator pedal position into output voltage, and emit the voltage signal to the ECM.
In addition, these sensors detect the opening and closing speed of the accelerator pedal and feed the voltage signals to the ECM. The ECM judges the current opening angle of the accelerator pedal from these signals and controls the throttle control motor based on these signals.
Idle position of the accelerator pedal is determined by the ECM receiving the signal from the accelerator pedal position sensor. The ECM uses this signal for the engine operation
such as fuel cut.
What are the Possible Causes of the DTC P2138 Dodge?
- Accelerator Pedal Position Sensor harness is open or shorted
- Accelerator Pedal Position Sensor circuit poor electrical connection
- Faulty Accelerator Pedal Position Sensor
- Faulty Electric Throttle Control Actuator
How to Fix the DTC P2138 Dodge?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P2138 Dodge code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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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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