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Pinpoint Test V : P1594 Or P1595: Notes

Normal Operation and Fault Conditions 

When the BCM receives a request to remote start the vehicle, it first checks to make sure conditions exist to allow it to start (for example, the hood and doors closed, vehicle in PARK, no powertrain concerns). If the required conditions are correct, the BCM starts the vehicle and allows it to run for a predetermined amount of time, determined by the setting selected from the message center.

PCM DTC Fault Trigger Conditions 

DTC Description Fault Trigger Conditions
P1594 Forced Engine Shutdown - Remote Start System Fault, No Unattended Vehicle Timeout Sets when the PCM detects the remote start has been active for more than 30 minutes continuously.
P1595 Forced Engine Shutdown - Remote Start System Fault, Transmission Range Not In Park Position Sets when the PCM detects the remote start is active with the transmission not in PARK.

Possible Causes