NOTE: If fault code SPN 3242 diesel oxidation filter (DOC) inlet temperature FMI any is present, repair it first. The fault indicates that the high idle regeneration (HIR) was aborted due to the DOC inlet temperature not reaching the minimum of 518°F to initiate dosing during a HIR. The CEL and MIL lamps will remain on until the fault is resolved or a successful regeneration is completed. POSSIBLE ISSUES:1. Intake Throttle Valve – perform intake throttle service routine to see if commanded position can be achieved.2. Exhaust leaks.3. Intake manifold leaks.4. Charge air cooler (CAC) leaks.5. Jake brake operation.6. DOC...

NOTE:The fault indicates that the high idle regeneration (HIR) was aborted due to the diesel oxidation catalyst (DOC) outlet temperature not reaching the expected target temperature to complete a HIR. If there are any other regeneration or fuel system related faults address those first. The CEL and MIL lamp will remain on until a fault is resolved or a successful regeneration is completed. POSSIBLE ISSUES:1. Low fuel compensation pressure.2. Exhaust leaks.3. Fuel leaks.4. Sticking hydrocarbon (HC) doser injection valve (High doser line pressure).5. DOC outlet temperature not responding. PROBABLE CAUSES:1. Low fuel compensation pressure.2. Exhaust leaks.3. Fuel leaks.4. Sticking hydrocarbon...

NOTE: The fault indicates that the high idle regeneration (HIR) was aborted due to the coolant temperature not reaching the minimum 60°C (140°F) to initiate a high idle regeneration. The amber warning lamp (AWL) comes on for approximately 15 seconds during the regeneration then goes out and the regeneration aborts. If engine fails to reach 60°C (140°F). NOTE: Engine can not regen because coolant does not get up to at least 140 degrees. You need to find the reason coolant won’t get up to temperature.

NOTE: Do not interrupt regeneration once it has been initiated. When this code is detected, the operator has two minutes to execute the entry conditions:1. Cycle clutch switch (Manual transmission).2. Cycle parking brake.3. Cycle neutral switch (Automatic transmission).4. Then initiate regen request. NOTE: If the procedure is not completed within the time limit, the engine will shutdown and the regeneration procedure must be restarted. NOTE: When this code is active, driver has 2 minutes to execute the entry conditions: Cycle clutch switch, parking brake, neutral switch (automatics), and then initiate the regen process. If not completed, engine will shut down...

NOTE: This code is informational only and used by service to help understand which dash lights illuminated during normal service. A stationary regen is required if the fault code is active. No action required for an inactive fault code. NOTE: This is a silent code that logs when the DPF is in “Regen Zone 3”. If this code is staying active you need to perform a regen.