Diagnostic Trouble Code (DTC) Information ECM-2100
Condition
The diagnostic trouble code (DTC) (Signal too high or signal too low) is stored if the engine control module (ECM) registers that the signal from the fuel pressure sensor corresponds to a pressure that is higher or lower than a certain value.
The diagnostic is active at ignition on or with the engine running.
Substitute Value
Diagnosis for fuel pressure regulation switched off.
Possible Source
Signal too high
- Contact resistance or oxidation in the terminals
- Short-circuit to supply voltage in the signal cable
- Open-circuit in the signal cable
- Open-circuit in the signal ground cable
- Damaged fuel pressure sensor.
Signal too low
- Short-circuit to ground in the signal cable
- Damaged fuel pressure sensor.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- Deterioration in performance
- The engine stops.