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Peake Fault Code Oxygen Sensors
So I went to Table 0F and went to 0E Code and it reads Aftercat 02 sensor cyl #1-4 and code 10 reads Precat 02 sensor aging cyl #1-4, does this mean that both pre and post cat 02 sensors need to be replaced and this is on the passenger side underbody? Not 100% sure where cyl. #1-4 are. I am not sure if both or just one 02 sensor needs replacement is aging means its okay, and also should i replace the other side in pairs as well? I read you should replace Pre's in pairs and Post in pairs, since I got one of each in the fault code I should replace all 4? Thanks, in advance.
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2003 BMW E53 X5 4.4i - M62 engine (Non Sport with Premium and Cold Weather Package) Color: Steel Gray Metallic Mods:4.6is Exhaust (Pipes, Mufflers and chrome oval tips) BMW Sport package Taillamps, BMW Tire Valve Stem Caps Medium tinted front windows JVC HD Radio Alpine 4x100 channel Amp Orion 600W Mono HC Amp Three 12" Sony Xplode in subwoofer enclosure |
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#2
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It's odd that you're getting post-cat errors. It's the pre-cats that read the 02 in your exhaust, then they feed the ECU to adjust fueling. The post-cats are simply there to confirm that you've got cats actually installed on the vehicle and do nothing for tuning, running issues, etc. I got my replacement 02's from Autozone for around $70 each. As much as you may not want to, I'd suggest replacing both pre-cat 02's (it'll help gas mileage in the long run), reset the codes, and go from there.
It's very common on the 5 and 7 boards that people have replaced cats around the 100k mark, so I'm still waiting to see those same issues start coming up around here as the X5 ages.
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650hp 10 X5///M - Stage 2, Vibrant 1794's , gutted cats, custom intake, AC Forged 22's 325hp 98 BMW 740iL - ///M5 6spd, www.bavengine.com w/ Performance Option, electric fan, CF intake tube w/ heatshield, Mag 14816 w/ notched bumper, Bilstein/H&R Stage II/Powerflex 600+hp 02 Harley F150 - MHP900 Stage 3 engine, KB2.3, 8# lower, 60# inj, Walbro FP's 135hp 01 TL1000R - M4 full exhaust, K&N, Yosh box, -1/+2 gears, 2CT's
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#3
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Quote:
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2003 BMW E53 X5 4.4i - M62 engine (Non Sport with Premium and Cold Weather Package) Color: Steel Gray Metallic Mods:4.6is Exhaust (Pipes, Mufflers and chrome oval tips) BMW Sport package Taillamps, BMW Tire Valve Stem Caps Medium tinted front windows JVC HD Radio Alpine 4x100 channel Amp Orion 600W Mono HC Amp Three 12" Sony Xplode in subwoofer enclosure |
#4
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For the aging faults you simply need to replace the O2 sensor affected by the fault. For the post cat O2 fault, there are only two kinds of faults for post cat O2 sensors... catalyst efficiency faults which indicate the cat converter isn't doing its job properly and the same aging fault which just needs the sensor.
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"When you do things right, people won't be sure you've done anything at all" (Bender, futurama) You make something idiotproof, they'll make a better idiot You think professional is expensive, just wait until you pay for amateur. Never let your sense of morals prevent you from doing what is right. Examine what is said, not who speaks. X5 pics RIP 4.6is..... 2003 4.6is |
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