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      08-15-2018, 10:32 PM   #1
Potatos
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Fault codes for O2 sensor heater and intergrated power supply. Need urgent help!!

Got these codes after downpipe, charge pipe and spark plug install. The first code always come on and the O2 sensor heater codes follows. Anyone experienced these before? NEED HELP!!!!

Codes are:
1B5202
12B302
12B402
12B102
12B202


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Last edited by Potatos; 08-15-2018 at 11:56 PM..
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      08-16-2018, 02:08 PM   #2
Potatos
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Need help! Anyone?
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      08-17-2018, 04:10 PM   #3
4everkidd
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looks like you may have twisted the wires to the O2 sensors creating a short.

Did you unplug the sensors prior to removal and install?
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      08-24-2018, 09:06 PM   #4
tinpot
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This seems to be a common issue when DP's are installed. The O2 sensors are easily damaged if not disconnected first. My guess is the O2 sensor got damaged during DP install (happened to me) and needs replacing.
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      07-15-2020, 01:19 AM   #5
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Sorry to bring this up after nearly 2 years, but im struggling with the same codes after DP install.
Checked the fuses, wiring and replaced the power distribution board but still getting code 1b5202 which I believe is cause of heater faults on all 4 O2 sensors.

Potato's, did you ever find the solution to this fault?
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      07-15-2020, 02:49 PM   #6
CAustin
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FOR FUTURE HELP!

Mine had damaged the Integrated Supply Module - PN 7614585. Its found left hand side of left front strut. Replaced with a used unit for 15!
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      06-11-2021, 10:01 PM   #7
Ricky_Blayz
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Quote:
Originally Posted by CAustin View Post
FOR FUTURE HELP!

Mine had damaged the Integrated Supply Module - PN 7614585. Its found left hand side of left front strut. Replaced with a used unit for 15!

Hey sorry old post so when you replaced the Integrated Supply Module, that completely fixed everything? So you had no more o2 sensor codes/and no cel? I have these same exact codes and Ive been struggling to find the fix
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      06-12-2021, 12:40 PM   #8
ICantDrive4Sht
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Quote:
Originally Posted by Ricky_Blayz View Post
Quote:
Originally Posted by CAustin View Post
FOR FUTURE HELP!

Mine had damaged the Integrated Supply Module - PN 7614585. Its found left hand side of left front strut. Replaced with a used unit for £15!

Hey sorry old post so when you replaced the Integrated Supply Module, that completely fixed everything? So you had no more o2 sensor codes/and no cel? I have these same exact codes and Ive been struggling to find the fix
I have 12B304 code.
Will replace the O2 sensor part 11787848486 after next week.
That should fix it.
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      06-21-2021, 09:23 PM   #9
Ricky_Blayz
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Quote:
Originally Posted by ICantDrive4Sht View Post
I have 12B304 code.
Will replace the O2 sensor part 11787848486 after next week.
That should fix it.

So ive replaced that integrated supply module that the other guy changed out and it fixed everything. No more codes and cel
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