Error code

OBD2 P0071

OBD2P0071
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Ambient Air Temperature Sensor Range/Performance.

Severity

lowYes, but you may experience issues with your climate control system.

Summary

P0071 indicates an issue with the ambient air temperature sensor's range or performance, which affects climate control functions but not engine operation.

Symptoms

  • Malfunctions in the climate control system such as failure of 'Auto' mode, inconsistent heating/cooling, and issues with exterior temperature displays.

Common Causes

  • Damaged ambient air temperature sensor due to collision or road debris
  • Corrosion or damage to the sensor's wiring or connector

Diagnosis

  1. Check the ambient air temperature sensor for resistance and smooth resistance change using a digital multimeter.
  2. Inspect the wiring harness and connector for damage or corrosion.
  3. Verify that the sensor is receiving proper voltage and signal input when connected.

Fixes

  • Replace the damaged ambient air temperature sensor if necessary.

FAQ

Can I drive with P0071?

Yes, but you may experience issues with your climate control system.

What causes P0071?

Common causes include damage to the ambient air temperature sensor due to collision or road debris and corrosion in the wiring or connector.

View source

Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.

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