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Diagnostic Trouble Code (DTC) Information ECM-903C

Condition 

This diagnostic trouble code is for informational purposes only. The diagnostic trouble code's only purpose is to inform that the reconfiguration, which may affect the emission system, has been active or is active. The diagnostic trouble code is always stored as the result of another trouble code. Troubleshooting is not required.

Also for upgraded software, released during year 2006 or later, this diagnostic trouble code is used as an information diagnostic trouble code. The diagnostic trouble code will only, however, be stored in case the substitute value, throttle shut, is or has been activated. The diagnostic trouble code is always stored as the result of another trouble code. Troubleshooting is not required. This applies to, for example, diagnostic trouble codes ECM-9150, ECM-9160, ECM-9190, ECM-91A7 or ECM-91B7.

See Identifying upgraded software ECM/ETM

NOTE:

For upgraded software, released during 2006 or later. There are certain instances when diagnostic trouble code ECM-903C is stored without another diagnostic trouble code that describes why the substitute value, throttle shut, is active or has been activated. If this is the case, try replacing the throttle unit.

Substitute Value 

Possible Source 

Faulty signal: 

Fault symptom[s] 

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