1. #1

    Disappearing check engine code

    I went to dive my 2018 JKUR Recon manual transmission to work tonight & got a CEL & a code reading p050b "Cold Start Ignition Timing Performance". It didn't run any different than normal. I tried clearing the code but it didn't disappear. I ended up disconnecting the battery for 10 mins & that made the CEL light go away but I'm still waiting for the other shoe to drop 😬
    I thought I was done with these issues getting a newer Jeep... that's what I get for thinking...
    The Proud President of the CAN'T HURT DIRT MUD SLINGERS
    'Cause you can't hurt dirt!
    Zach Harpst

  2. #2
    Join Date
    Feb 2009
    Dayton Ohio Area

    Disappearing check engine code

    Never saw a b code

    Here is what I found

    Common Problems That Trigger the P050B Code

    Clogged air filter
    Idle Air Control (IAC) valve failure
    Mass Air Flow (MAF) sensor failure
    Powertrain Control Module (PCM) failure
    Throttle body assembly failure
    Wiring issue

    Monitor your mpg. Full yo empty tank. Or aapp same miles driven.

    Never look down on anyone unless you are helping them up - Jesse Jackson
    "Never look down on anybody unless you're helping him up" - Jesse Jackson

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