Service Throttle Position Sensor

Service Throttle Position Sensor

This is a discussion on Service Throttle Position Sensor within the RAM 1500 Diesel General Discussion forums, part of the RAM 1500 EcoDiesel Forum category; Well, after 10k miles care free owning the truck (purchased with 24k, now has 33287), I’ve gotten the dreaded Service Electronic Throttle Control code. I ...

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Thread: Service Throttle Position Sensor

  1. #1
    RAM Jr Member dakohrs21's Avatar
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    Well, after 10k miles care free owning the truck (purchased with 24k, now has 33287), I’ve gotten the dreaded Service Electronic Throttle Control code. I was doing some light hauling and towing helping my brother clean out his new house. Truck runs good, just the code. I’ll schedule an appointment ASAP to have it looked at, and will post my exact experience and results to add to the pool.

    I’ve heard anything from cracked boost pipes to bad fuel to loose connectors. I’m eager to see what is the cause.

    Regards,

    Dave
    Last edited by dakohrs21; 05-18-2019 at 04:36 PM. Reason: Wrong code

  2. #2
    RAM Bronze Member Kazimodo's Avatar
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    It can be many different things , you need to pull the code associated
    with that dash display , the code will pinpoint the source of the trouble .
    ..
    did you touch both pedal at the same time for a second ??
    Captainmal likes this.

  3. #3
    RAM Jr Member dakohrs21's Avatar
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    Was backing a trailer on a steep grade, so possibly for a moment. Can’t recall exactly. Are our trucks really that finicky?

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    RAM Diamond Member Captainmal's Avatar
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    Yes. At least on that issue of using both gas and brake at the same time.
    If you wrestle with a pig you'll both get dirty and the pig loves it. .

  6. #5
    RAM Jr Member dakohrs21's Avatar
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    Well, after cleaning the MAP sensor and EGR diffuser, CEL still shows. I have an appointment for Thursday, so hopefully I get some answers then.

    Any idea if the GDE tune fixes this issue?

  7. #6
    RAM Diamond Member Captainmal's Avatar
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    Find out what the code and exact issue is first. Then pose the results to GDE.

    Report back with the information.
    Last edited by Captainmal; 05-19-2019 at 09:48 AM.
    If you wrestle with a pig you'll both get dirty and the pig loves it. .

  8. #7
    RAM Jr Member dakohrs21's Avatar
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    Update: exact code is P0299 turbo/supercharger Underboost. I cleaned the map sensor and egr diffuser yesterday, assuming this would be the code since they’re so common. Code hasn’t cleared itself, and I’d rather not clear it with the reader until Thursday when the dealership can find out exactly what happened.

    From my browsing, it seems that the core cause was a software issue.

    Dave
    Captainmal likes this.

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    RAM Ninja DrivingZiggy's Avatar
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    Quote Originally Posted by dakohrs21 View Post
    I’ve heard anything from cracked boost pipes to bad fuel to loose connectors.
    Don't forget "bad battery."

  10. #9
    RAM Jr Member dakohrs21's Avatar
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    Bit of an update. The dealership turned me away this morning, apparently the only person employed there who is capable of doing the paperwork necessary to complete the AEM is gone, so they rescheduled everything for Tuesday.

    Saturday I have to make a trip out to Ohio, so naturally I’d like to have use of the turbo while doing so. I deleted the CEL, took the truck for a drive, and it hadn’t come back on (yet, knock on wood). I’m assuming my cleaning the map sensor was the fix.

    Regardless, truck will be going in Tuesday and the tech assured me he will go through all the same steps as if the code were still present. Sorry for the anticlimactic story.

    Dave

  11. #10
    RAM Ninja choochooman74's Avatar
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    A code reader is a must for anyone's tool box.
    2015 Ram 1500 ED Big Horn (Purchased 8/15) CC 6.5' Bed, GDE Tuned Since Week 1, Pace Edwards Jackrabbit Tonneau, 1A Auto Tow Mirrors, Debadged, SLT Grill Inserts, XD 797 Spy 18x8.5 Wheel with Michelin Defender LTX M/S2 LT275/65R18 Tires, 20" Stock Wheels Plastidipped with 275/60R20 Blizzaks DM-V2
    2006 Jeep Liberty CRD, GDE Engine and Transmission Tuned
    Back to work, New Travel Trailer Coming!

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