Diagnostic Trouble Code (DTC) Information ECM-841B

Condition 

Engine control module (ECM) checks the voltage feed at start. If the Engine control module (ECM) detects that the voltage feed is lower than a certain value, during a certain time, the control module interprets this as a malfunction and the diagnostic trouble code is generated.

The diagnostic trouble code (DTC) can be diagnosed when starting the engine.

Substitute Value 

• None.

Possible Source 

• Battery voltage too low.
• Contact resistance or oxidation in the terminals.

Fault symptom[s] 

• Engine fails to start