data trouble code fix
check Engine Light Present
DTC Code P0203
definition
• Injector circuit open/cylinder-3
symptoms
• Illuminated check engine light
• Engine misfire
• Rough running engine
• Poor fuel economy
causes
• Faulty cylinder 3 injector
• Wiring harness that has an open or short
• Poor electrical connection in the harness or connector
• ECM that is failing or has failed
posible fix
• Cylinder 3 fuel injector replaced
• ECM replacement
• Repair or replacement of wiring issues
• Fixing poor connection faults
Note: This code is similar to P0200, P0201, P0202, P0204, P0205, P0206, P0207, P0208. In addition, this code may be seen with engine misfire, rich, and lean conditions
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