NOTE: The ECM monitors the rail pressure and when it changes more than 200 bar for 8 seconds the code is set. PROBABLE CAUSES:1. Fuel rail pressure sensor connector/harness.2. Fuel rail pressure sensor.3. Failed Quantity Control Valve.4. Failed ECM.

NOTE: Please see the step by step troubleshooting procedures for this specific code. NOTE: If inactive, clear the code, cycle the engine, and see if comes back. If it doesn’t problem solved. Otherwise, POSSIBLE failures are:1. Measure voltage on the ECM 21-pin connector pin 7 and ground. If less than 11.5 V, repair the wiring to pin 7.2. If 11.5V or greater, find the Common Powertrain Controller connect #2. Measure the voltage between pin 3 and ground. If less than 11.5V, find source of problem. If greater, repeat procedure.

DESCRIPTION:Adaptive cruise control message not received or signal error. MONITORED PARAMETER:Adaptive cruise control. TYPICAL ENABLING CONDITIONS:Always on MONITOR SEQUENCE:None EXECUTION FREQUENCY:Continuous when enabling conditions met. TYPICAL DURATION:2 seconds DASH LAMPS:None ENGINE REACTION:None VERIFICATION:Key cycle – ignition on. NOTE: This fault code may set if driver does not wait for gauge sweep after turning the ignition on. NOTE: If any battery voltage codes present, first those first. If code 625-9 active, fix that before proceeding as well. PROBABLE CAUSES:1. CPC recently programmed incorrectly.2. If the adaptive cruise control module illuminates when the ignition key is cycled, inspect the J1939 wiring to...

DESCRIPTION:Adaptive cruise control message not received. MONITORED PARAMETER:PGR034 Adaptive Cruise Control Enable. TYPICAL ENABLING CONDITIONS:1. Key is on.2. CPC is online.3.CAN network is online.4. Adaptive cruise control system is equipped.5. 10 seconds after the engine has been cranked. MONITOR SEQUENCE:None EXECUTION FREQUENCY:Continuous when enabling conditions met. TYPICAL DURATION:Two seconds DASH LAMPS:None ENGINE REACTION:None VERIFICATION:Engine running for one minute. NOTE: If any battery voltage codes present, first those first. If code 625-9 active, fix that before proceeding as well. PROBABLE CAUSES:1. CPC recently programmed incorrectly.2. Another computer on the truck is the cause of the problems (ABS, Transmission, etc…).

NOTE: Please see the step by step troubleshooting procedures for this specific code. NOTE: If any battery voltage codes present, first those first. If code 625-9 active, fix that before proceeding as well. PROBABLE CAUSES:1. CPC recently programmed incorrectly.2. Another computer on the truck is the cause of the problems (ABS, Transmission, etc…).