Diagnostic Trouble Code (DTC) Information

Condition:
Diagnostic trouble code (DTC) C1-174 is stored if engine speed (RPM) exceeds 100 rpm and the combined instrument panel registers no fuel consumption signal within 60 seconds.

Possible Source:
- Short-circuit to supply voltage in signal cable.
- Short-circuit to ground in signal cable.
- Open-circuit in signal cable.
- One or more diagnostic trouble codes (DTCs) stored in engine control module (ECM).

Fault Symptom(s):
In cars equipped with a trip computer the incorrect average fuel consumption, actual fuel consumption and range to empty fuel tank values are displayed.

Start fault-tracing with LB. "Fuel Consumption Signal - Signal Missing". Fuel Consumption Signal-Signal Missing