Diagnosis & Repair
WARNING: This page is about a different car, the 2003 Toyota Camry. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
- DTC P2A00 may be also detected, when the air-fuel ratio is stuck rich or lean.
- A low A/F sensor voltage could be caused by a rich air fuel mixture. Check for conditions that would cause the engine to run rich.
- A high A/F sensor voltage could be caused by a lean air fuel mixture. Check for conditions that would cause the engine to run lean.
- Read freeze frame data using the hand-held tester or the OBD II scan tool. Freeze frame data records the engine conditions when a malfunction is detected. When trouble shooting, it is useful for determining whether the vehicle was running or stopped, the engine was warmed up or not, the air-fuel ratio was lean or rich, etc. at the time of the malfunction.
For wiring diagram, see DTC P2195: OXYGEN (A/F) SENSOR SIGNAL STUCK LEAN (BANK NO. 1 SENSOR NO. 1) & DTC P2196: OXYGEN (A/F) SENSOR SIGNAL STUCK RICH (BANK NO. 1 SENSOR NO. 1) . For diagnosis and repair active test, see Figure and Figure . For diagnosis and repair:
- For steps 1-2, see Fig 1.
- For step 2 (cont.) and step 3, see Figure.
- For steps 4-8, see Fig 2.
- For steps 9-10, see Figure.
- For step 11, see Figure.
- For steps 12-18, see Fig 3.