DTC U0420 Dodge
Secondary Air Injection System Pump Relay Circuit Short to B+
Secondary Air Injection System Pump Relay Circuit Short to B+
Description
The output Diagnostic Test Mode (DTM) can be activated only with the ignition switched on and the engine not running. The output DTM is interrupted if the engine is started, or if a rotary pulse from the ignition system is recognized. .
Cause and Solution
Fuel pump relays have failed Fuel injector has failed Hoses on the EVAP canister may be clogged EVAP canister purge regulator valve may be faulty ECM may have failed Manifold Tuning Valve (IMT) may have failed
Video Guide
Diagnostic Info
- DTC Code: U0420
- Brand: Dodge