1. Welcome to Jeeps.net!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Jeep discussion topics
    • Transfer over your build thread from a different forum to this one
    • Communicate privately with other Jeep owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Trouble codes

Discussion in 'General Jeep Discussion' started by Pyschosparky, Nov 2, 2019.

  1. Nov 2, 2019 at 11:48 AM
    #1
    Pyschosparky

    Pyschosparky [OP] Member

    Joined:
    Nov 2, 2019
    Member:
    #4041
    Messages:
    10
    Gender:
    Male
    Vehicle:
    2008 jeep wrangler Sahara
    I have a 2008 wrangler, with about 180k miles.. was hoping someone could help me with some problems. I keep getting codes p0132 and p0300, and sometimes p1128, runs really bad, i cant figure it out..
     
  2. Nov 2, 2019 at 1:11 PM
    #2
    Awrench

    Awrench Well-Known Member

    Joined:
    May 12, 2018
    Member:
    #2303
    Messages:
    889
    Gender:
    Male
    Vehicle:
    3 jeeps
    What have you done to your jeep - come on fess up what did you change powertrain wise or do. Parts, modifications off road deep water bottom out on rock?

    You did use a SCANNER?
    P0132-O2 SENSOR 1/1 CIRCUIT HIGH
    >> above is likely why next code appears
    P1128-CLOSED LOOP FUELING NOT ACHIEVED - BANK 1

    P0300-MULTIPLE CYLINDER MISFIRE

    All tells me something wrong on B1.
    I would look at B1S1 o2 sensor voltage, check fuel trims, FYI B1 is RS (passenger).
    Check o2 sensor wiring.
    Possible Causes
    (K41) O2 1/1 SIGNAL CIRCUIT SHORTED TO VOLTAGE
    (K902) O2 RETURN UPSTREAM CIRCUIT TO VOLTAGE
    (K41) O2 1/1 SIGNAL CIRCUIT OPEN
    (K902) O2 RETURN UPSTREAM CIRCUIT OPEN
    1/1 O2 SENSOR

    b1s1.jpg
     
  3. Nov 2, 2019 at 1:52 PM
    #3
    Pyschosparky

    Pyschosparky [OP] Member

    Joined:
    Nov 2, 2019
    Member:
    #4041
    Messages:
    10
    Gender:
    Male
    Vehicle:
    2008 jeep wrangler Sahara
    There has been no mods done to my jeep, all completely stock.. this happened all at once after downshifting to 5th gear to pass a car. After this happened, i replaced an O2 sensor that had a broken wire, and replaced the crank position sensor. I have a scan tool to read and erase codes.. i dont know what to do..
     
  4. Nov 2, 2019 at 2:01 PM
    #4
    Pyschosparky

    Pyschosparky [OP] Member

    Joined:
    Nov 2, 2019
    Member:
    #4041
    Messages:
    10
    Gender:
    Male
    Vehicle:
    2008 jeep wrangler Sahara
    Also, haven't taken it off road or anything. Nothing except highway driving in over a year.. haven't hit anything or anything like that.. i did replace the clutch about 2000 miles ago..
     
  5. Nov 2, 2019 at 3:35 PM
    #5
    Awrench

    Awrench Well-Known Member

    Joined:
    May 12, 2018
    Member:
    #2303
    Messages:
    889
    Gender:
    Male
    Vehicle:
    3 jeeps
    jeeps are demanding, you must use a jeep or NTK brand o2 sensor.

    After the new sensor, you cleared the codes, AND what is status- no codes, new codes, same codes?
    Will you scanner look at live data - ECT, MAP, TPS, o2 voltages, fuel trims etc.

    OK with the new NTK/jeep o2 sensor (not just pushing clear) the PCM ram memory must be cleared, dont panic
    a fancy term that can done by removing the battery cable and giving it a few minutes to discharge RAM.

    Now you replaced the CKP, again with a NEW jeep part and did you perform the Cam/Crank Variation Relearn?
    should be on your scanner.

    SUGGEST you rescan and post ALL codes.
     
  6. Nov 2, 2019 at 4:37 PM
    #6
    Pyschosparky

    Pyschosparky [OP] Member

    Joined:
    Nov 2, 2019
    Member:
    #4041
    Messages:
    10
    Gender:
    Male
    Vehicle:
    2008 jeep wrangler Sahara
    I did disconnect the battery to hard reset everything.. the same codes come back.. it will run fine for about 45 seconds, then the check engine light comes back, flashing, and the engine starts to run rough.. No, i did not do a relearn, never have heard of that.
     
  7. Nov 2, 2019 at 5:05 PM
    #7
    Awrench

    Awrench Well-Known Member

    Joined:
    May 12, 2018
    Member:
    #2303
    Messages:
    889
    Gender:
    Male
    Vehicle:
    3 jeeps
    the CEL is flashing?

    Are you showing any other codes P020X?

    You have a SCANNER not just a code reader? Seams something is missing here.

    Can you see the live data I mentioned above?

    Was the o2 sensor a jeep or NTK brand?

    Did you just plug it in OR did you have to wire it? The p0132 with the new sensor suggest either a DIYer sensor OR other circuit wiring issues.



    Forget that term hard reset.
     
  8. Nov 2, 2019 at 8:07 PM
    #8
    Pyschosparky

    Pyschosparky [OP] Member

    Joined:
    Nov 2, 2019
    Member:
    #4041
    Messages:
    10
    Gender:
    Male
    Vehicle:
    2008 jeep wrangler Sahara
    Yes.. the CEL does flash.. it is a scanner, it can see live data, i just dont know what to look for.. it plugs into the odb2 port. The p0132 code was there before, and after the new sensor,(s).. nothing changed with new ones..
     
  9. Nov 3, 2019 at 3:26 AM
    #9
    Awrench

    Awrench Well-Known Member

    Joined:
    May 12, 2018
    Member:
    #2303
    Messages:
    889
    Gender:
    Male
    Vehicle:
    3 jeeps
    What sensor did you replace? driver LS, passenger RS, pre cat or post cat?

    look at live data - ECT, MAP, TPS, o2 voltages, fuel trims, the basics.
    Especially the o2 voltage for B1S1, (p0132) is the voltage stuck or do you see sweep?

    A flashing CEL fuel trims should be HIGH +. advise.

    Have you looked at spark plugs B1 - are they wet, black?
    plugs 1,3,5 are sparking?
     
  10. Nov 3, 2019 at 6:46 AM
    #10
    Pyschosparky

    Pyschosparky [OP] Member

    Joined:
    Nov 2, 2019
    Member:
    #4041
    Messages:
    10
    Gender:
    Male
    Vehicle:
    2008 jeep wrangler Sahara
    I replaced b1s1, i guess when i pulled the transmission, i broke a few wires on it, i will go out and look at live data soon.. i did look at a few of the plugs, they looked good, wasnt wet, ot black.. I will look for spark on 1, 3, and 5..
     
  11. Nov 10, 2019 at 1:11 PM
    #11
    Pyschosparky

    Pyschosparky [OP] Member

    Joined:
    Nov 2, 2019
    Member:
    #4041
    Messages:
    10
    Gender:
    Male
    Vehicle:
    2008 jeep wrangler Sahara
  12. Nov 10, 2019 at 1:18 PM
    #12
    Pyschosparky

    Pyschosparky [OP] Member

    Joined:
    Nov 2, 2019
    Member:
    #4041
    Messages:
    10
    Gender:
    Male
    Vehicle:
    2008 jeep wrangler Sahara
    I took the live data..
    Map -10.6 to 11.8
    TPS - 14.9
    O2 voltage b1s1, 1.27 steady
    b2s1, .01 to .70 sweeping
    I tried to take a video but i cant upload to thread..
     
  13. Nov 10, 2019 at 1:40 PM
    #13
    Pyschosparky

    Pyschosparky [OP] Member

    Joined:
    Nov 2, 2019
    Member:
    #4041
    Messages:
    10
    Gender:
    Male
    Vehicle:
    2008 jeep wrangler Sahara
  14. Nov 12, 2019 at 3:53 PM
    #14
    Pyschosparky

    Pyschosparky [OP] Member

    Joined:
    Nov 2, 2019
    Member:
    #4041
    Messages:
    10
    Gender:
    Male
    Vehicle:
    2008 jeep wrangler Sahara
    Any ideas?? Please.. if i knew what was wrong i would fix it.. from what understand it could be anything from a cracked intake to a bad fuel pump.. i need help..
     

Products Discussed in

To Top