HELP!!!! dtc codes
+ Reply to Thread
Results 1 to 6 of 6

This is a discussion on HELP!!!! dtc codes within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; i have a 2005 wrx and the cel is flashing so i hooked up a scan tool to it and ...

  1. #1
    Registered User
    Join Date
    Dec 2004
    Posts
    18

    HELP!!!! dtc codes

    i have a 2005 wrx and the cel is flashing so i hooked up a scan tool to it and saw that most of the codes had to do with low voltage or low input. it threw a P1518, P0851, P0137, P0502, AND A P0503. any suggestions on how to fix this? i have a full exhaust, intake and boost controller.

  2. Remove Advertisements
    ClubWRX.net
    Advertisements
     

  3. #2
    Registered User Treefrogaz's Avatar
    Join Date
    Apr 2004
    Location
    Luke AFB, AZ
    Posts
    199
    Quote Originally Posted by BPL294
    i have a 2005 wrx and the cel is flashing so i hooked up a scan tool to it and saw that most of the codes had to do with low voltage or low input. it threw a P1518, P0851, P0137, P0502, AND A P0503. any suggestions on how to fix this? i have a full exhaust, intake and boost controller.
    I really dont know what to tell you but the codes that you threw are......

    P1518 Starter switch circuit low input
    P0851 Neutral suitch input circuit low
    P0137 O2 Sensor circuit low voltage bank 1 sensor 2
    P0502 Vehicle speed sensor low speed
    P0503 Vehicle speed sensor high speed

    Hope that helps some good luck to ya.

  4. #3
    Registered User
    Join Date
    Dec 2004
    Posts
    18
    any one have any idea what would cause the low input codes???? the battery is fine the connectors are fine... the car was diconnected from the battery for about a month or so, dunno if that means anything...

  5. #4
    Registered User SicWRX37's Avatar
    Join Date
    Apr 2005
    Location
    Charlotte, NC
    Posts
    641
    Did these codes apear after installing your aftermarket parts?
    P0137 O2 Sensor circuit low voltage bank 1 sensor 2...That code means your sensor is reading lean most likely because of your intake(same thing happened to me).Your PCM is compensating for your lean condition but you will probably notice crappy gas mileage, and a check engine light that will always be on.
    P0502 Vehicle speed sensor low speed
    P0503 Vehicle speed sensor high speed
    These two codes are probably from a bent, chipped, or missing tooth from your VSS wheel. So its giving false readings at all speeds. Pull of your wheels one at a time and inspect each toothed wheel.
    P1518 Starter switch circuit low input
    P0851 Neutral suitch input circuit low
    those two are probably like you said from the battery being disconnected for so long.
    I hope that helped in someway.
    Let us know what you come up with.

  6. #5
    Registered User
    Join Date
    Dec 2004
    Posts
    18
    these codes came up after i got in an accident. before the accident i had all the aftermarket parts in there and i had a solid cel im guessing from the exhaust. but i just got it back and its blinking. in the accident i messed up my driver side back wheel pretty bad so that vss code makes sense now. ill check out the teeth on the gear on that tire.... thanks alot

  7. #6
    Registered User SicWRX37's Avatar
    Join Date
    Apr 2005
    Location
    Charlotte, NC
    Posts
    641
    Quote Originally Posted by BPL294
    these codes came up after i got in an accident. before the accident i had all the aftermarket parts in there and i had a solid cel im guessing from the exhaust. but i just got it back and its blinking. in the accident i messed up my driver side back wheel pretty bad so that vss code makes sense now. ill check out the teeth on the gear on that tire.... thanks alot
    that solid cell you had i can almost gaurantee is from that intake. If you can get a hold of a scanner that can show live data do it....if you do get one look for HO2S11, thats your bank 1 sensor, if its reading below .45 volts your running lean that being the meaning of O2 Sensor circuit low voltage. Let me know what you come up with im interested in what you find.

+ Reply to Thread

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.
If you do not want to register, fill this field only and the name will be used as user name for your post.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself. We strongly suggest that you stay away from using aol, yahoo, msn, and hotmail accounts. Sometimes the mail server blocks the emails from our server. As a result you will not receive any notifications including the confirmation email.

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.


Posting Permissions

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
  •