P0491 Diagnostic Trouble Code Discussion for April 2008
Secondary AIR System Insufficient Flow Detected (Bank 1)
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| Help Request | Posted | |
| 2003 BMW 325xi 2.5L MIL Lamp on VIN: WBAEU33453 P0491: secondary air system-bank 1. ... engine soon light was on. ran KOEO self-test. found DTCs P0491 & P0492. performed visual inspection of secondary air system. found loose connector @ air pump. secured plug, cleared codes, road tested. MIL light did not co... |
April 21, 2008 |
