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BMW 3-Series (E90 E92) Forum
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Lambda codes after hard start?
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11-24-2016, 09:03 PM | #1 |
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Lambda codes after hard start?
I have been dealing with the dreaded rough idle for a while now, can't seem to cure it. Walnut blasting, new plugs, cleaning throttle body, VANOS solenoids, and boost & TMAP sensors have not helped. Also all new coils.
Anyway, I had a really long cold start this evening, and the check engine light came on. Codes are: 2C9C Lambda probe heating in front of catalytic converter, input signal 2CAA Lambda probe before catalyst, temperature 2CA6 Lambda probe heating in front of catalytic converter, function Any ideas?! I am on stock DPs. |
12-30-2016, 01:41 PM | #3 | |
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I have 2C9C.....wont go away. Happens after I took Traction Control off, and drove extremely hard in the Snow to make it up a Hill. Stalled in reverse once, temp was really high....then waited a bit, and started right back up. Cleared codes, and now I have 3 codes. That are givng me a Chech engine light. Help would be appreciated. Best Regards, and Happy New Year. |
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12-31-2016, 04:51 AM | #4 |
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Yes, the Lambda codes were a faulty pre-cat O2 sensor. As for my rough idle, probably a combo of leaky injectors and a faulty HPFP, although the HPFP was probably the main culprit. Anyway, if you are just throwing the Lambda codes, probably have a bad O2 sensor.
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