Diagnostic Aids
WARNING: This page is about a different car, the 2003 Lexus GX 470. However, it is still accessible from the selected car via links, so may be relevant.
- If DTC P0115, P0116, P0117, P0118 and P0125 are output together, ECT sensor circuit may be open. Diagnosis and repair DTC P0115, P0117 or P0118 first. See DTC P0115, P0117 OR P0118 .
- Read freeze frame data using hand-held tester or OBD-II scan tool, as freeze frame data records engine conditions when a malfunction is detected. When troubleshooting, this is useful for determining whether vehicle was running or stopped, engine was warmed up or not, or air-fuel ratio was lean or rich at time of malfunction.