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DTC P2A00 A/F Sensor Circuit Slow Response (Bank 1 Sensor 1): Description

HINT:

Sensor 1 refers to the sensor mounted in front of the Three-Way Catalytic Converter (TWC) and located near the engine assembly.

Refer to DTC P2195 (See DTC P2195 OXYGEN (A/F) SENSOR SIGNAL STUCK LEAN (BANK 1 SENSOR 1); DTC P2196 OXYGEN (A/F) SENSOR SIGNAL STUCK RICH (BANK 1 SENSOR 1) ).

DTC DETECTION CONDITION CHART

DTC No. DTC Detection Condition Trouble Area
P2A00 Calculated value of air-fuel ratio (A/F) sensor response rate deterioration level less than threshold (2 trip detection logic)
  • Open or short in A/F sensor (sensor 1) circuit
  • A/F sensor (sensor 1)
  • A/F sensor (sensor 1) heater
  • EFI relay
  • A/F sensor heater and EFI relay circuits
  • Air induction system
  • Fuel pressure
  • Injector
  • PCV valve and hose
  • PCV hose connection
  • ECM
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