P050B Diagnostic Trouble Code Discussion for April 2016
Cold Start Ignition Timing Performance
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| Help Request | Posted | |
| 2009 Audi A4 Quattro 2.0L MIL Lamp on VIN: WAUSF78K99 P050B: Cold start ign timing performance. ... p0302,p0304,p2279, and p2188. At that time I could not duplicate the problem. I smoke checked the intake, and found no leaks.The fuel trim was only 2% ST and LT. I tested the purge valve, and it did not leak, and it operated properly. So I changed the plug... |
April 14, 2016 |
