P0491 Diagnostic Trouble Code Discussion for July 2015
Secondary AIR System Insufficient Flow Detected (Bank 1)
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| Help Request | Posted | |
| 2006 Mercury Milan Premier 2.3L Wrench Light on VIN: 3MEHM08Z16 P0491: Secondary AIR System Insufficient Flow Detected (Bank 1). Customer states wrench light comes on in the morning, idles uneven, then clears off if the ignition is shut off then started again. MIL is also on. I have replaced the thermostat, and verified that the P0128 was resolved. I am currently waiting for an AIR pump... |
July 18, 2015 | |
| 2006 Mercury Milan Premier 2.3L Wrench Light on VIN: 3MEHM08Z16 P0491: Secondary AIR System Insufficient Flow Detected (Bank 1). Customer states wrench light comes on in the morning, idles uneven, then clears off if the ignition is shut off then started again. MIL is also on. I have replaced the thermostat, and verified that the P0128 was resolved. I am currently waiting for an AIR pump... |
July 20, 2015 |
