GDS data analysis
- Connect GDS and select "DTC Analysis" mode
- Start the engine.
- Monitor the parameters related to DTC on the "Current Data" menu of the GDS as below.
Off duration O2 sensor heating upstream value is growing up to 30.9% at a time of start and then it will decreases approx. 25~35%.
Lamda closed loop active is turned on after 25s from engine start.
- Is parameter displayed within specifications?
YES
- Fault is intermittent caused by poor contact in the sensor's and/or PCM's connector. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO
- Go to next step.