Diagnostic trouble code (DTC) information

Condition 

Fig 1: Identifying Throttle Unit And Potentiometer

Courtesy of VOLVO CARS OF NORTH AMERICA.

Diagnostic trouble code (DTC) ECM-9117 is stored if the engine control module (ECM) registers that the throttle angle at the return limit position is outside the programmed parameter when trying to adapt the throttle unit.

Substitute Value 

None.

Possible Source 

Faulty signal: 

• The throttle is sticking or is blocked (oil film, dust etc.)
• Contact resistance or oxidation in the terminals between the engine control module (ECM) and the throttle unit
• Defective throttle unit.

Fault symptom[s] 

• Driving/Poor performance/lacks power
• Idling/Uneven idle