At the end of hauling ny 5th wheel on a 2 hour drive I received the exhaust filter over limit message and engine light came on. It's a 2015 f250 super duty with 11500 miles. I called the dealer when I got home and he recommended changing the air filter. I did that and then drive 1000 highway miles on a vacation, mostly hauling the 5th wheel. The only light/message I get is the check engine light. The truck will not attemp to regen. Any help??

 

Moved to the 6.7 section.


When towing you usually don't go into regen. There are enough hot temps to passively regen.


You are going to have to take it in for the P24A2 code.

 

I am sometimes amazed at recommendations made by dealers. I agree with Scott in that your truck needs to visit a competent technician to diagnose and repair your issue before it creates actual problems for you. Your filter should be clean now just with passive regen from towing, but that won't last very long once the towing stops.

 

I've talked to the dealer ship 3 times. Each time he keeps telling me to drive it. I had just put a k&n air filter in last week (light was already on) and when I went to drop it off yesterday he told me to put a motorcraft filter in and drive it more. Driving 3 hours in a few days so hopefully that helps. Also I'm under the impression that the regen won't happen if my check engine light is on. True?

 

after market filters can cause the p2002 code.


Regens will happen even if you have the check engine light.

 

http://www.motorcraftservice.com/vdi...DOBDSM1501.pdf

page 83

P24A2

DPF Incomplete Regeneration Monitor

The DPF Incomplete Regeneration monitor is used to detect an event where the DPF is not fully regenerated. If a regeneration event is aborted due to duration and the restriction of the DPF is still above a threshold, a fault is indicated. Upon the first occurrence of an incomplete regen, the system is put into a “degraded” regen mode. Another regen will be forced in approximately 150 miles unless a normal regen is triggered by the soot load first.

P2002

page 183

I/M Readiness

The readiness function is implemented based on the SAE J1979/ISO 15031-5 format. Clearing codes using a scan tool results in the various I/M readiness bits being set to a “not-ready” condition. As each non-continuous monitor completes a full diagnostic check, the I/M readiness bit associated with that monitor is set to a “ready” condition. This may take one or two driving cycles based on whether malfunctions are detected or not. The readiness bit for comprehensive component monitoring is immediately considered complete since they are
continuous monitors.

 

Thanks for the info Larry. Can you dumb the 2002 code down a little bit for me please.

 

the way i read the 2002 code is that if you clear the codes with a scanner, you might set a "switch" in the PCM that should have been cleared by a drive cycle or two. It appears the 2002 might clear itself with no problems.

 

Thanks Larry.