P0422 OBD Trouble Code

1 result found

P0422 - GM
Type Powertrain - Auxiliary Emission Controls - ISO/SAE Controlled
Description

Catalyst System Low Efficiency Conditions

Location Bank 1
Cause

DTC P0100, P0131, P0132, P0134, P0135, P0136, P0138, P0139, P0140, P0141, P0150, P0151, P0152, P0154, P0155, P0156, P0158, P0159, P0160, P0161, P0171, P0172, P0174, P0175, P0300-P0306, P0440, P0442, P0443, P0446, P0455, P1120 or P1220 not set, in closed loop, TWC temperature above 716°F, engine load at 8-12%, engine speed 1400-2200 rpm, then the PCM detected the Bank 1 catalyst efficiency was too far degraded

Try also: https://www.obd-codes.com/p0422