Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information ECM-9800

Condition




The diagnostic trouble code (DTC) is stored if the engine control module (ECM) registers an internal fault which indicates that the normal engine control functions are producing a higher torque than is within the maximum permitted range.
The diagnostic trouble code (DTC) is diagnosed at ignition on or with the engine running.

Substitute value
- The engine speed (RPM) is restricted to approximately 2200 rpm by the fuel shut-off system
- Requested torque is limited to a calculated operating range.

Possible source
- Air leakage in the intake system.
- Search for failure cause with another stored diagnostic trouble code in the control module.
- Damaged engine control module (ECM).

Fault symptom[s]
- Maximum engine speed (RPM) too low
- Cruise control does not work at all
- Uneven idle
- Malfunction indicator lamp (MIL) lit.