P1634low severityPowertrain
Accelerator Pedal Kickdown Switch
on 1997 BMW 318ti E36 1.9L I4 M44 · RWD
What this code means
The DME detected a fault in the accelerator pedal kickdown switch circuit. The kickdown switch signals full throttle request for transmission downshift. This is a convenience feature fault rather than a driveability concern.
Symptoms
- No kickdown during full throttle acceleration
- Transmission may not downshift when floored
- Check Engine Light
Common causes
- Faulty kickdown switch in accelerator pedal
- Wiring issue to kickdown switch
- Accelerator pedal module failure
- Connector corrosion
Diagnostic steps
- Test kickdown switch signal with scan tool while pressing pedal fully
- Inspect accelerator pedal connector
- Test switch continuity
- Check wiring to DME
Repair notes
Replace the accelerator pedal module if the kickdown switch is integrated and has failed.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1