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Diagnostic Trouble Code: B0408
Diagnostic Trouble Code Name: Drivers Air Mix Door Motor Circuit
Vehicle Make: Holden
Vehicle Model: Commodore (VE)
Diagnostic Code Entered By: ZerOne
Diagnostic Code Entered On: Wed Oct 06, 2010 11:00 pm
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Please Note: The DTC Information provided has been randomly generated.
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Diagnostic Trouble Code Description:
Cylinder 4 Misfire Detected
Possible Sensor Faults
ECM
Possible Related Diagnostic Trouble Codes
DTC P0300-P0306 for the 2.8L, 3.0L, 3.2L, or 3.6L engine
Circuit / System Description
The engine control module (ECM) uses information from the crankshaft position sensor and the camshaft position sensors in order to determine when an engine misfire is occurring. By monitoring variations in the crankshaft rotation speed for each cylinder, the ECM is able to detect individual misfire events. A misfire rate that is high enough can cause 3-way catalytic converter damage. The malfunction indicator lamp (MIL) will flash ON and OFF when the conditions for catalytic converter damage are present. DTCs?P0301 through P0306 correspond to cylinders?1 through 6. If the ECM is able to determine that a specific cylinder is misfiring, the DTC for that cylinder will set, and the corresponding fuel injector is disabled. The ECM will re-enable the fuel injector after 4 crankshaft revolutions when the misfire is not current. The ECM will re-enable the fuel injector after 8 crankshaft revolutions when the misfire is not current, if the vehicle is equipped with a manual transmission.
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