← Look into the faults of the GMC Yukon
Trouble code
P0430: possible causes and documented repairs — 2000–2006 GMC Yukon
Of the records of the 2000–2006 GMC Yukon, 12 state trouble code P0430 (Manufacturer communication: 12). The technical documents say how to deal with 3 of its possible causes. They are listed by the number of matching records, most first.
Narrow it by model year, engine and more
Causes the technical documents say how to deal with (3)
P0420 / P0430 on a new or just-replaced catalytic converter (break-in not completed)
5 matching records
An SES light may occur on low-mileage vehicles or vehicles that recently had the catalytic converter replaced.
DTCs P0420 and/or P0430 may be stored.
How to tell
What to do
- If the diagnostics still do not pass, perform SI diagnostics and repair as necessary.
- On a new/low mileage vehicle with these DTCs, use the Tech 2 to verify engine run time on the Engine Hour Meter in the IPC Data Display/Data 1 List.
- Finally, restart the engine and operate the vehicle at the conditions for running the DTC P0420/430 tests, and make sure the vehicle passes them.
- If this occurs, clear the DTCs and perform the drive cycle.
2 more steps ·All steps, part numbers and sources (3 sources) →
Ground Ring Terminal: loose or misadjusted
3 matching records
Coil Ground Ring Terminal: loose or misadjusted
1 matching record
Related symptoms, trouble codes and warning displays
What the technical documents state together with the faults above.
- Symptom
- Warning light
- Trouble code
- P0420
- Warning display
- Check engine / Service Engine Soon
Put together by FaultCrate from public records and technical documents. The cause and the repair are for the workshop to decide with the vehicle in front of it. Counts are records, not failure rates.