DTC P2A00 A/F Sensor Circuit Slow Response (Bank 1 Sensor 1); DTC P2A03 A/F Sensor Circuit Slow Response (Bank 2 Sensor 1): Description

WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.

Refer to DTC P2195

HINT

DTC P2A00 indicates malfunctions related to the bank 1 air fuel ratio sensor.
DTC P2A03 indicates malfunctions related to the bank 2 air fuel ratio sensor
Bank 1 refers to the bank that includes No 1 cylinder
Bank 2 refers to the bank that includes No 2 cylinder

Sensor 1 refers to the sensor mounted in front of the three-way catalytic converter and located near the engine assembly

DTC DETECTION CONDITION CHART

DTC No.	DTC Detection Condition	Trouble Area
P2A00 P2A03	Calculated value for air fuel ratio sensor response rate deterioration level is less than threshold	Open or short in air fuel ratio sensor (bank 1, 2 sensor 1) circuit Air fuel ratio sensor Air fuel ratio sensor heater ECM