P0068moderate severityPowertrain
MAP/MAF - Throttle Position Correlation
on 2003 Subaru Legacy 3.0L H6 · AWD
What this code means
The MAP or MAF sensor reading does not correlate with the throttle position sensor reading.
Symptoms
- Check Engine Light
- Poor acceleration
- Rough idle
- Stalling
Common causes
- Intake manifold vacuum leak
- Faulty MAP or MAF sensor
- Throttle position sensor issue
- Intake gasket leak
Diagnostic steps
- Check for vacuum leaks
- Test MAP/MAF sensor readings
- Test TPS
- Inspect intake gaskets
Repair notes
Repair vacuum leak or replace faulty sensor.
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