Mercedes Benz Truck G 550 Diagnostic Trouble Codes 0443

Mercedes-Benz Mercedes Benz OEM Parts Mercedes Benz OE Replacement Parts

0443
Heating of component G3/4 (Right O2 sensor, before TWC [KAT]) : Open circuit (P0030)
Possible cause:
- G3/4 (Right O2 sensor, before TWC [KAT])
- Voltage supply via component Z7/36 (Circuit 87 M2e connector sleeve)
Affected functions:
- Engine diagnosis
- Exhaust system
-------------------------------------------------
Test 1: Power supply
Test 2: Check component G3/4 (Right O2 sensor, before TWC [KAT]).
Test 3: Check component G3/4 (Right O2 sensor, before TWC [KAT]).
1. Power supply
Voltage supply via component Z7/36 (Circuit 87 M2e connector sleeve)
Possible cause and remedy
- Check voltage supply according to wiring diagram.
2. Check component G3/4 (Right O2 sensor, before TWC [KAT]).
Warning!Communication with ECU required.
3. Check component G3/4 (Right O2 sensor, before TWC [KAT]).
Warning!Communication with ECU required.