Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information EFI-242

Condition




Diagnostic trouble code (DTC) EFI-242 is stored if there is a short-circuit to ground/voltage or an open-circuit in the turbocharger (TC) control valve circuit.

Substitute value
- idle air trim disabled
- fuel trim disabled
- conditions for fuel shut-off changed

Possible source

Signal too high:
- short-circuit to supply voltage in signal cable
- defective turbocharger (TC) control valve

Signal too low:
- short-circuit to ground in signal cable
- defective turbocharger (TC) control valve.

Signal missing:
- defective fuse 11B/5 (1998-)
- open-circuit in signal or power cable.
- contact resistance in terminals
- defective turbocharger (TC) control valve.

Fault symptom[s]
- improved or impaired performance due to excessively high or excessively low boost pressure.