DTC P0420 Daewoo
Catalyst Low Efficiency (Bank 1)
Catalyst Low Efficiency (Bank 1)
Description
DTC P0106-P0108, P0117-P0118, P0121-P0123, P0125, P0201-P0204, P0131-P0140, P0171, P0172, P0300, P0336, P0337, P0341, P0342, P0351, P0352, P0402, P0440, P0502, P1133, P1134, P1171, P1441 and P1626 not set, engine running in closed loop at under 3500 rpm,
Cause and Solution
Air leaks at the exhaust manifold or in the exhaust pipes
Catalytic converter is damaged, contaminated or has failed
Front HO2S or rear HO2S is contaminated with fuel or moisture
Video Guide
Diagnostic Info
- DTC Code: P0420
- Brand: Daewoo