P2138
Throttle/Pedal Position Sensor/Switch D/E Voltage Correlation
1992-1996 BMW 318is E36 1.8L I4 🇩🇪
Critical SeverityPowertrain
Description
The dual accelerator pedal position sensors report conflicting values.
Symptoms
- Limp mode
- No throttle response
- Check engine light
- Engine at idle only
Common Causes
- Failed APP sensor
- Corroded pedal connector
- Wiring fault
- 5V reference issue
Diagnostic Steps
- Check APP sensor D and E voltages
- Verify 5V reference
- Inspect pedal connector
Repair Notes
Replace accelerator pedal assembly. Check shared 5V reference circuit.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P2138 on Other Vehicles
Common Questions
What does code P2138 mean on a 1992-1996 BMW 318is E36?
P2138 stands for "Throttle/Pedal Position Sensor/Switch D/E Voltage Correlation". The dual accelerator pedal position sensors report conflicting values.
What are the symptoms of P2138 on a BMW 318is E36?
Common symptoms of P2138 include: Limp mode, No throttle response, Check engine light, Engine at idle only.
What causes P2138 on a 1992-1996 BMW 318is E36?
Common causes of P2138 include: Failed APP sensor, Corroded pedal connector, Wiring fault, 5V reference issue.