Powertrain Source reviewed Lights the check engine lamp

P00A5: Intake Air Temperature Sensor 2 Circuit Bank 2

Standardized SAE J2012 code · P00xx — Fuel & air metering and auxiliary emission controls

What does P00A5 mean?

Intake air temperature sensor 2 for bank 2 is the second air temperature sensor in the intake path of the second cylinder bank, for example in the intake manifold behind the charge air cooler on engines with two intake paths. For P00A5, this is the general circuit fault; low and high signals have their own codes. No manufacturer description naming this exact code was found. Bank 2 codes occur only on engines with two separate intake or charge-air paths, one per cylinder bank.

The code tells you which monitor failed, not which part is broken. Test before replacing parts.

Symptoms

  • Check engine light on
  • Usually no noticeable symptoms
  • Emissions test or readiness check may fail

Common causes

  • High Connector or wiring faulty
  • High Sensor faulty
  • Medium Supply or ground disturbed
  • Low Engine control module faulty

Likelihood is a general estimate across vehicles; your make and model may differ.

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