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Old 03-08-2012, 05:13 PM
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engine light and limp mode fix

..I had a check engine light/limp mode this week for p2084 which is one of the egt sensors. All i did was pull the 3 most aft ones and clean them with brake cleaner and wire brush..reinstall and had autozone clear the engine light.. Well the truck was still stuck in limp mode...so i disconnected the battery and reconnected to see if it would work and alll i got was another check engine light for p1135 i think it was.. egr position sensor which i ended up changing the egr pressure sensor on the exhaust and had autozone reset again and it was still stuck in limp mode. So i called ford and they informed me only there programmer could take it out of limp mode. well i went to the local orileys autoparts and they have a high tech programmer and it was able to take the truck out of limp mode and they do it for free. just giving everyone a heads up incase they have the same issue.
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Old 03-08-2012, 05:14 PM
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also i drove the truck for 2 days 40 miles to work each day in limp mode. NO FUN!
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Old 03-09-2012, 06:58 AM
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Originally Posted by Ericr712 View Post
..I had a check engine light/limp mode this week for p2084 which is one of the egt sensors. All i did was pull the 3 most aft ones and clean them with brake cleaner and wire brush..reinstall and had autozone clear the engine light.. Well the truck was still stuck in limp mode...so i disconnected the battery and reconnected to see if it would work and alll i got was another check engine light for p1135 i think it was.. egr position sensor which i ended up changing the egr pressure sensor on the exhaust and had autozone reset again and it was still stuck in limp mode. So i called ford and they informed me only there programmer could take it out of limp mode. well i went to the local orileys autoparts and they have a high tech programmer and it was able to take the truck out of limp mode and they do it for free. just giving everyone a heads up incase they have the same issue.
I feel your pain, man. I recently had a limp mode issue and mine was throwing P0652 (sensor reference voltage low) and P2454 (DPF pressure sensor). There were also codes (can't remember the numbers) for EGR and throttle assembly sensors. I had all those sensors replaced, but it still kept throwing P0652 and going into limp. After many trips to the dealer, they finally unplugged all the wiring harness connectors and cleaned them real good and the problem seems to have gone away. It's been a month now and no more limp mode. Yours may be a similar problem.
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Old 03-13-2012, 07:56 AM
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Originally Posted by cp2146 View Post
I feel your pain, man. I recently had a limp mode issue and mine was throwing P0652 (sensor reference voltage low) and P2454 (DPF pressure sensor). There were also codes (can't remember the numbers) for EGR and throttle assembly sensors. I had all those sensors replaced, but it still kept throwing P0652 and going into limp. After many trips to the dealer, they finally unplugged all the wiring harness connectors and cleaned them real good and the problem seems to have gone away. It's been a month now and no more limp mode. Yours may be a similar problem.
Oops, I spoke too soon. It did it again over the weekend...threw P0652 and went into limp mode. At the dealer as I write this. No word yet on a fix this time. Hopefully soon as I hate this stupid gangster rent car they have me in.
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Old 03-16-2012, 09:24 AM
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Back from the shop. This time they replaced the EP sensor and fixed a questionable spot on the wiring harness that may have been rubbing against the frame and grounding. We'll see, especially the next time it rains and gets wet underneath.
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Old 03-18-2012, 07:01 AM
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I have had a similar problem of my truck going into reduce engine power and showing a code of p2610 ecm/pcm Internal engine off timer performance and the engine light comes on as well. I have cleared them and they keep coming back on. Does anyone know what this code means and how to fix this. Thanks, Frankie
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