Cat Flash III: 6.2L / 6.4L Diagnostic & System Improvements 6/23/15 (P1217 P121B P2227)

Discussion in 'SRT Hellcat TSB's' started by ResumeSpeed, Jun 24, 2015.

  1. ResumeSpeed

    ResumeSpeed Platinum Member Agent 707

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    TSB NUMBER: 18-035-15 REV. A
    GROUP: Vehicle Performance
    DATE: June 23, 2015

    SUBJECT: Flash: 6.2L / 6.4L Diagnostic And System Improvements

    OVERVIEW: This bulletin involves reprogramming of the Powertrain Control Module (PCM) with the
    latest software.

    MODELS:
    2015 (LA) Dodge Challenger
    2015 (LD) Dodge Charger
    2015 (LX) Chrysler 300

    NOTE: This bulletin applies to vehicles built on or before June 6, 2015 (MDH 0606XX)
    equipped with a 6.2L engine (Sales Code ESD) or 6.4L engine (Sales Codes
    ESG or ESH).

    SYMPTOM/CONDITION:
    A small number of customers may experience one or more of the following symptoms
    and/or a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the
    technician may find one or more of the following Diagnostic Trouble Codes (DTCs).

    Symptoms:
    · Unable to accurately increase or decrease the cruise control set speed using the
    resume or set buttons while the instrument cluster is set on metric units. Instead of
    changing vehicle speed by 1 KPH when pressing the buttons, the vehicle speed will
    increase approximately 1.6 KPH.
    · Slight spark knock condition during aggressive high speed driving which may
    prevent the vehicle from achieving maximum top speed.

    DTCs:
    · P1217 - Active Exhaust Valve 1 Performance
    · P121B - Active Exhaust Valve 2 Performance
    · P2227 - Barometric Pressure Circuit Performance

    -RS
     

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  2. stephenlocke

    stephenlocke Hellcat Member

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    Thanks RS. I have a question on the DTCs, what is this solving? I have seen a few posts where people state they got he latest flash and lost all the pops and crackles from their exhaust on deceleration. I'm still in my break in period so unsure whether I should take to the dealer for this or not?
    Thanks in advance:)
     
  3. TallCool1

    TallCool1 Gold Member Hellcat Car Club Gold Supporting Member Nat'l Hellcat Tech Advisor HCC Charter Member

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    I don't notice a difference (but few miles since done but I will report if I do.)
     
  4. JonWrong

    JonWrong Silver Member

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    Can you do this yourself or must it go in?
     
  5. ResumeSpeed

    ResumeSpeed Platinum Member Agent 707

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    It's only affecting a small number of vehicles, so if you are not throwing any of the codes then you would not need to have the Flash done.
     
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  6. Paladin06

    Paladin06 Have Guns Will Travel Staff Member Hellcat Car Club Gold Supporting Member

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    Thanks as always!;)
     
  7. Driver72

    Driver72 Gold Member

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    Not that I plan on trying to achieve top speed, but would this not also affect acceleration during wide open throttle applications as speeds rise then too?

    If so, what exactly is the reflash doing that fixes this issue?

    Thanks
     
  8. Aaron Vogel

    Aaron Vogel Silver Member

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    Think you kind of answered your own question. The flash corrects the symptom of slight spark knock. Probably just a fine-tuning to the timing etc
     
  9. Driver72

    Driver72 Gold Member

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    So the reflash then does adjust the timing to eliminate that potential slight spark knock?
    Well, wonder if that will improve performance at WOT when you are into triple digit speeds?

    If so, the reflash would be worth doing next dealer visit for that alone.
     
  10. Aaron Vogel

    Aaron Vogel Silver Member

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    That's how i interpret the symptoms description. Some members have reported the misfire code etc, this is suppose to correct the issue as far as i know.
     
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  11. TxBoosted

    TxBoosted Gold Member

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    Like others have said, I had it done just cause and didn't see any differences.
     
  12. BLKFISH

    BLKFISH Hellcat Member

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    RS... I have a check engine light and code P2227 on my Cat at 31 miles. I purchased my car our of town, so need a local dealer for service. Can you help direct me to an experienced dealer near 55347?

    As always, thank you.
     
  13. RCJ

    RCJ Rookie

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  14. RCJ

    RCJ Rookie

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    Well I got my done I think it sucks it felt like a lost power and my pop and crackle sound wish I can go back to the old software
     
  15. DShatzer

    DShatzer Gold Member

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    I guess the German deliveries have interesting reflash procedures.
     

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