P2626moderate severityPowertrain
O2 Sensor Pumping Current Trim Circuit Open Bank 1 Sensor 1
on 2002 BMW 525i 2.5L I6 M54 · RWD
What this code means
Open circuit in the wideband O2 sensor trim circuit on bank 1.
Symptoms
- Check engine light
- Poor fuel economy
- Rough running
Common causes
- Failed wideband O2 sensor
- Wiring damage
- ECM circuit fault
Diagnostic steps
- Check sensor connector
- Measure sensor heater and signal circuits
- Inspect wiring
Repair notes
Replace wideband O2 sensor. Verify wiring.
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