P0523moderate severityPowertrain
Engine Oil Pressure Sensor/Switch High Input
on 2005 Mazda B2300 2.3L I4 · FWD
What this code means
High voltage from oil pressure sensor.
Symptoms
- Very high oil pressure reading
- Warning light on
Common causes
- Open circuit
- Short to power
- Faulty sensor
Diagnostic steps
- Test with mechanical gauge
- Test circuit voltage
- Test sensor
Repair notes
Replace sensor if actual pressure is normal.
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