The manifold absolute pressure sensor reading is implausible. The 981 uses a MAP sensor in conjunction with the MAF.
SYMPTOMS
- Check-engine light
- Rough idle
- Hesitation
- Economy loss
LIKELY CAUSES
- Failed MAP sensor
- Vacuum leak
- Clogged MAP port
- Wiring fault
DIAGNOSIS STEPS
- Compare MAP vs barometric at key-on
- Check the vacuum port
- Inspect wiring
RELATED PARTS
- MAP sensor