The 2006 Volvo V70 just had the Code P0420 last night. Cleared the code for now before my daughter drove it to school today.
According to engine-codes.com these are possible causes:
- Three way catalyst converter Bank 1
- Exhaust tube
- Intake air leaks
- Fuel injectors may be faulty
- Fuel injector leaks
- Spark plugs may be faulty
- Improper ignition timing
- Engine Control Module (ECM)
What do you guys think I should try first ?
Use a bottle of Chevron Techron Fuel System Cleaner.
Check and replace spark plugs if needed ?
How do I check "Intake Air Leaks" and "Fuel Injector Leaks" ?
According to engine-codes.com these are possible causes:
- Three way catalyst converter Bank 1
- Exhaust tube
- Intake air leaks
- Fuel injectors may be faulty
- Fuel injector leaks
- Spark plugs may be faulty
- Improper ignition timing
- Engine Control Module (ECM)
What do you guys think I should try first ?
Use a bottle of Chevron Techron Fuel System Cleaner.
Check and replace spark plugs if needed ?
How do I check "Intake Air Leaks" and "Fuel Injector Leaks" ?