P2A04

O2 Sensor Circuit Range/Performance Bank 2 Sensor 2

DTC P2A04, sometimes indicated as P2A0400 is an OBD diagnostic trouble code indicating a manufacturer-specific fault with the vehicle powertrain (i.e. engine and gearbox). This code identifies an error with the causing o2 sensor circuit range/performance bank 2 sensor 2.

The P2A04 code is caused by a problem with the oxygen sensor circuit. The most common causes are a faulty oxygen sensor or a wiring problem.
If the oxygen sensor is faulty, it needs to be replaced. If the wiring is faulty, the wiring needs to be repaired or replaced.

  • P2A04: Sensor Circuit Range/Performance Bank 2 Sensor 2
  • P2A04: O2 Sensor Circuit Range/Performance Bank 2 Sensor 2
  • P2A04: O2 Sensor Circuit Range/Performance Bank 2 Sensor 2
  • P2A04: Heated oxygen sensor (HO2S) 2, bank 2 – circuit range/performance
  • P2A04 00: Heated oxygen sensor (HO2S) 2, bank 2 - circuit range/performance

DTC Trouble Code Search
Bulletins

Bulletins are notices put out by manufacturers in conjunction with the NHTSA to notify the public of manufacturing issues or changes.

  • SA-004-19 - ENGINE (PWS)
    MAZDA: Some customers may complain of a check engine light on while driving the vehicle. If dtcs P2A04:00, P2272:00 and/or other dtcs are found during diagnosis, follow the repair procedure below. P2A04:00 - ho2s (lh) circuit range/performance, p2
  • SA-004-18 - ENGINE (PWS)
    MAZDA: Ome customers may complain of a check engine light on while driving the vehicle. If dtcs P2A04:00, P2272:00 and/or other dtcs are found during diagnosis, follow the repair procedure below. P2A04:00 - ho2s (lh) circuit range/performance, p2
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