Diagnostic trouble code (DTC) information

Condition 

Diagnostic trouble code (DTC) ECM-41 is stored if the engine speed (RPM) signal exceeds 3,500 RPM, the load exceeds 250 mg/stroke and the signal from the knock sensor (KS) is missing.

Substitute Value 

• Initial boost pressure
• Retarded ignition.

Possible Source 

• Open-circuit in the signal cable
• Short-circuit to ground in signal cable
• Short-circuit to supply voltage in the signal cable
• Faulty knock sensor (KS).

Fault symptom[s] 

• Poor performance.