DTC U1454 Dodge
EVAP Leak Detection Pump Control Circuit Low
EVAP Leak Detection Pump Control Circuit Low
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 between the catalytic converter and the cylinder head, coolant temperature must be at least 80 degrees Celsius and oxygen sensor heaters for oxygen sensors before the catalytic converter must be functioning properly and the ground between the engine and the chassis must be well connected. The DME detected voltage irregularity in the leak detection pump control circuit.
Cause and Solution
EVAP LDP power supply circuit is open EVAP LDP solenoid valve is damaged or it has failed EVAP LDP canister has a leak or a poor seal EVAP canister system has an improper seal Evaporative Emission (EVAP) canister purge regulator valve 1 has failed Leak Detection Pump (LDP) is faulty Aftermarket EVAP parts that do not conform to specifications EVAP component seals leaking (i. e. , leaks in the Purge valve, fuel tank pressure sensor, canister vent solenoid, fuel vapor control valve tube assembly or fuel vapor vent valve).
Video Guide
Diagnostic Info
- DTC Code: U1454
- Brand: Dodge