Originally Posted by Ericr712
..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.