HELP CHEck ENGINE LIGHT ON :(
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From: San Jose, CA
Car Info: BMW 525i E39
HELP CHEck ENGINE LIGHT ON :(
Just wandering if there is anyway I can defeat Check Engine light that came on. I was running COBB Stage 2. But I sold my AP and now running without tune and my mods on the car as of right now are HKS up pipe, HKS down pipe << i know. With HKS Carbon Ti Exhaust. Any way that i can make the light go away? .. any HELP appreciated.
Last edited by Subaru_dude; Sep 4, 2008 at 10:51 AM.
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I'm assuming the CEL is the rear o2 sensor? There is both a mechanical and electrical fix. Not sure who sells them anymore.
Mechanical fix is basically a spacer that moves the probe out of the exhaust so it thinks its reading normally.
Electrical fix alters the electrical signal so the computer thinks the probe is reading normally.
Mechanical fix is basically a spacer that moves the probe out of the exhaust so it thinks its reading normally.
Electrical fix alters the electrical signal so the computer thinks the probe is reading normally.
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sorry, I was posting from the iPhone before class, so I couldn't type too much.
Gruppe-S carries both fixes but lists the mechanical fix as being for 2005+ models, and I can't tell from your avatar what year you have but it looks like an 02-03). The electrical fix isn't that hard to do, you just have to unplug the rear o2 sensor, cut the wires, and solder it in. If you're not good at soldering I would have someone that is good do it for you.
Gruppe-S carries both fixes but lists the mechanical fix as being for 2005+ models, and I can't tell from your avatar what year you have but it looks like an 02-03). The electrical fix isn't that hard to do, you just have to unplug the rear o2 sensor, cut the wires, and solder it in. If you're not good at soldering I would have someone that is good do it for you.
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Bro even easier, two spark plug anti-foulers, 5/8'' drill bit. Drill them out with the 5/8 drill bit and screw the 02 sensor into the anti-foulers and the anti-foulers into the down pipe and reset the ECU. Easy day..
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Thread Starter
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From: San Jose, CA
Car Info: BMW 525i E39
my check engine light is still on ... i just put the Helix CEL fix yesterday and drove it for like 5 miles or so and it came back on as i just put together both battery wires to reset the ECU. but the light came on again help ... if any one else knows wat could be wrong with it 
any other mods? bov? may be running too lean..... at least thats whats wrong with my car right now and i put stock bov back on and everything is better. if anything just get the code pulled and you'll know what you need to fix.
WES
WES