2004 Cadillac CTS Q&A
2004 Cadillac CTS Question: engine light on
Here are some of the problems that can cause a cylinder misfire: Worn out Spark Plugs Ignition Wires, Coil(s), Distributor Cap and Rotor (when applicable) Incorrect Ignition Timing Vacuum Leak(s) Low or Weak Fuel Pressure Improperly functioning EGR System Defective Mass Air Flow Sensor Defective Crankshaft and/or Camshaft Sensor Defective Throttle Position Sensor Mechanical Engine Problems i.e Low Compression, Leaking Head Gasket(s) or Valve Problems - sinautoscan.com
Vehicles with certain V6 engines may illuminate the Check Engine Light one or more of the following codes: P0011, P0014, P0021, P0024, P0341, P0346, P0336, or P0391. O...
the check engine light came on and has not gone off.
our check engine light stays on. the diagnostic shows transmition trouble. no one can find problem. car runs fine for over a year. had sensor replaced still stays on. now we can not get our PA vehi...
Illumination of the Check Engine Light can be caused by a loose or worn gas cap.