Powertrain
generic / SAE
P009A
Intake Air Temperature/Ambient Air Temperature Correlation
Intake air temperature and ambient air temperature readings deviate beyond plausible limits — at engine off both should match within tolerance.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number– / 9A
Possible causes
- One sensor drifted high
Inspection / repair
- Difficulty: easy
- DIY: possible
- Estimated cost: 40–250 €
- Estimated time: 0.3–1.5 h
- Component: iat sensor
- Component: ambient air temp sensor
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012