Diagnostic Aids

If DTC P0010 is displayed, check left bank OCV circuit. It DTC P0020 displayed, check right bank OCV circuit. Read freeze frame data using hand-held tester or OBD-II scan tool. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, it is useful for determining whether the vehicle was running or stopped, the engine was warmed up or not, or air-fuel ratio was lean or rich.