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Check Engine Light Information
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Code	Description	Component(s) Commonly Involved	Possible Symptoms (All may cause increased emissions)	Common Causes
P0201	Injector Circuit / Open - Cylinder 1
P0103	Mass Or Volume Air Flow A Circuit High Input
P0102	Mass Or Volume Air Flow A Circuit Low Input	Wiring/short to ground/intake leak/Mass Air Flow sensor	Hard-start or possible No-start condition, decreased engine performance and fuel economy, increased tailpipe emissions, possible fuel trim Diagnostic Trouble Code	Mass Air Flow (MAF) sensor, Volume Air Flow (VAF), wiring or circuit, possible short to ground
P0101	Mass Or Volume Air Flow A Circuit Range/Performance

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