OBD-II code · Powertrain (generic)
P0070 Ambient Air Temperature Sensor Circuit A
Generic electrical fault in the ambient air temperature sensor A circuit. Used by the ECU for cold-start corrections, climate logic, and intake-air calculations.
Is it safe to drive with P0070?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySensor element failed
- PossibleWiring open or connector loose
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.3–1 h
- Emissions test
- Usually unaffected
- Parts involved
- Ambient Air Temp Sensor, Sensor Wiring
Related codes
- P00D9Ambient Air Temperature Sensor Circuit B
- P006DBarometric Pressure - Turbocharger/Supercharger Inlet Pressure Correlation Bank 1
- P006ETurbocharger/Supercharger Boost Control A Supply Voltage Circuit Low
- P006FTurbocharger/Supercharger Boost Control A Supply Voltage Circuit High
- P0071Ambient Air Temperature Sensor Circuit A Range/Performance
- P0072Ambient Air Temperature Sensor Circuit A Low
- P0073Ambient Air Temperature Sensor Circuit A High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.