DTC U1894 GMC
EVAP Leak Detection Pump (LDP) Control Circuit Open
EVAP Leak Detection Pump (LDP) Control Circuit Open
Description
Engine started, battery voltage must be at least 11.5v, all electrical components must be off, parking brake must be engaged (to keep daytime driving lights off), automatic transmission selector must be in park, the exhaust system must be properly sealed
Cause and Solution
EVAP LDP power supply circuit is openEVAP LDP solenoid valve is damaged or it has failedEVAP LDP canister has a leak or a poor sealEVAP canister system has an improper sealEvaporative Emission (EVAP) canister purge regulator valve 1 has
Video Guide
Diagnostic Info
- DTC Code: U1894
- Brand: GMC