Powertrain Diagnosis

P1845- TOROUE LIMIT MANAGEMENT
The ECM continuously calculates how much engine torque should he commanded for the given engine speed and throttle angle. The ECM then compares this commanded value to a maximum torque value that could he applied at that specific engine speed and throttle angle. DTC P1845 will set if the commanded engine torque for the given engine speed and throttle angle fall outside the maximum allowable limit for longer than 10 minutes. Under no circumstance should the commanded engine torque exceed the maximum allowable engine torque.

DTC PARAMETERS
DTC P1845 will set if the ECM calculated engine torque exceeds the maximum allowable engine torque (based on engine speed and throttle angle) when:
^ Condition exists for longer than 10 minutes
^ Engine is speed is greater than 40 rpm

DTC P1845 runs continuously with engine running.

DTC P1845 is a type D DTC

DIAGNOSTIC AIDS
No external component or driveablity failures should set this DTC. This DTC indicates that an error has occurred with the ECM engine torque calculation function.

Replace the ECM. Refer to "DTC P0601" for reprogramming and learning instructions.