Powertrain
generic / SAE
P0074
Ambient Air Temperature Sensor Circuit A Intermittent/Erratic
Intermittent dropouts or noise on the ambient air temperature sensor A signal — typically a loose connector or chafed wiring.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number– / 74
Possible causes
- Connector loose or corroded high
- Connector with intermittent contact under vibration low
- Harness routed against vibrating component low
Inspection / repair
- Difficulty: easy
- DIY: possible
- Estimated cost: 20–150 €
- Estimated time: 0.3–1 h
- Component: ambient air temp sensor
- Component: sensor wiring
- MIL / check engine light
Sources
References
sae:J2012