OBD-II code · Powertrain (generic)
P0073 Ambient Air Temperature Sensor Circuit A High
Ambient air temperature sensor A signal voltage above the expected range — typically open circuit (broken wire or sensor) or short to power.
Is it safe to drive with P0073?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySignal wire open
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
- P00DCAmbient Air Temperature Sensor Circuit B High
- P0070Ambient Air Temperature Sensor Circuit A
- P0071Ambient Air Temperature Sensor Circuit A Range/Performance
- P0072Ambient Air Temperature Sensor Circuit A Low
- P0074Ambient Air Temperature Sensor Circuit A Intermittent/Erratic
- P0075Intake Valve Control Solenoid Circuit Bank 1
- P0076Intake Valve Control Solenoid Circuit Low Bank 1
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.