DTC U148D Dodge
Exhaust (Bank 1 Sensor 1) Heater Return Connection
Exhaust (Bank 1 Sensor 1) Heater Return Connection
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
Check activation of Recirculation Pump RelayOxygen sensor (before catalytic converter) is faultyOxygen sensor (behind catalytic converter) is faultyOxygen sensor heater (before catalytic converter) is faultyOxygen sensor heater (behind c
Video Guide
Diagnostic Info
- DTC Code: U148D
- Brand: Dodge