P2135
Throttle/Pedal Position Sensor/Switch A/B Voltage Correlation
1992-1996 BMW 318is E36 1.8L I4 🇬🇧
Critical SeverityPowertrain
Description
The dual throttle position sensors are reporting conflicting values, indicating a fault.
Symptoms
- Limp mode
- Reduced power
- Check engine light
- Erratic throttle response
Common Causes
- Failed TPS (built into throttle body)
- Connector corrosion
- Intermittent wiring
- 5V reference circuit fault
Diagnostic Steps
- Check TPS sensor A and B voltages
- Verify 5V reference
- Wiggle test wiring
- Check connector pins
Repair Notes
Replace throttle body assembly (TPS is integrated). Check 5V reference shared with other sensors.
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
P2135 on Other Vehicles
Common Questions
What does code P2135 mean on a 1992-1996 BMW 318is E36?
P2135 stands for "Throttle/Pedal Position Sensor/Switch A/B Voltage Correlation". The dual throttle position sensors are reporting conflicting values, indicating a fault.
What are the symptoms of P2135 on a BMW 318is E36?
Common symptoms of P2135 include: Limp mode, Reduced power, Check engine light, Erratic throttle response.
What causes P2135 on a 1992-1996 BMW 318is E36?
Common causes of P2135 include: Failed TPS (built into throttle body), Connector corrosion, Intermittent wiring, 5V reference circuit fault.