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  1. P

    Any Experience with P0401

    Glad it seems like the CEL went away for you! I'd still think about getting the extended warranty if you are still eligible and plan to keep the truck for awhile. I've had multiple service advisors tell me the emissions systems on these truck are ticking time bombs.
  2. P

    Any Experience with P0401

    What did they say? I had a 2020 that had P0407 (EGR position sensor B low input) that I continued to drive because parts were back ordered then spent $3600 replacing the EGR cooler and temperature and pressure sensors that went bad and it still didn’t fix the problem. I was out of the 3 year...
  3. P

    P0407 EGR Valve Position Sensor B - low input CEL

    Another update. It’s been 5 weeks since I ordered the parts and all but one has come in, a $5 EGR cooler O-ring. After digging with the parts guy we come to find out there are 170 people in front of me waiting on this $5 O-ring that according to the parts guy has been on back order since May...
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    P0407 EGR Valve Position Sensor B - low input CEL

    Update if anybody is following. Pressure sensor parts have been on back order and CEL is on all of the time now with P0407 and new codes P2457 P049B P045F. Took it back in and now need new EGR cooler in addition to the EGR position sensor and EGR temperature sensor. Paid $1500 today to order...
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    P0407 EGR Valve Position Sensor B - low input CEL

    CEL came on last week on my 2020 Ecodiesel for P0407 EGR Valve Position sensor B - low input. Truck runs fine otherwise. I've cleared the code a few times and it seems to come back after a few days. I have 37,500 on my truck so it's out of warranty for EGR. Dealer claims they tested wiring and...
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