P0420 OBD Trouble Code
1 result found
| Type | Powertrain - Auxiliary Emission Controls - ISO/SAE Controlled |
|---|---|
| Description | Catalyst System Low Efficiency Conditions |
| Location | Bank 1 |
| Cause | No PCM codes set, ECT input over 167°F, IAT input over O°F, MAF input 12-32 g/sec, engine speed below 4000 rpm, engine load under 63% and steady for 4 minutes, then engine speed at 1000-3000 rpm and VSS at 30-75 mph and the PCM detected that the catalyst O2 storage capacity was below an acceptable level |
Try also: https://www.obd-codes.com/p0420
