P1553moderate severityPowertrain
Barometric Pressure Sensor Electric Fault
on 1999 BMW 540iT E39 4.4L V8 · RWD
What this code means
The DME detected an electrical malfunction in the barometric pressure sensor circuit. This sensor provides altitude compensation data for fuel and ignition calculations.
Symptoms
- Check Engine Light
- Poor high-altitude performance
- Incorrect fuel mixture
- Reduced power
Common causes
- Faulty barometric pressure sensor
- Wiring damage to sensor
- Corroded sensor connector
- DME internal reference voltage fault
Diagnostic steps
- Test sensor supply voltage
- Check sensor output signal range
- Inspect wiring and connector
- Compare barometric reading with known altitude
Repair notes
Replace the barometric pressure sensor or repair the wiring fault.
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