Misfire on cylinder #3, not sure of the cause (no spark, blown gasket, injector problem).
PO303 indicates a misfire on cylinder #3. Normally caused by bad spark plug or plug wire.
Trouble code P0303 means:Cylinder 3 misfire detected
PO303 , misfire engine cylinder # 3
Trouble code P1131 means: Lack Of HO2S11 Switches - Sensor Indicates Lean
po300-Random/multiple cylinder misfire detected. po303-Cylinder no. 3 misfire detected. po306-cylinder no. 6 misfire detected po300-Random/multiple cylinder misfire detected. po303-Cylinder no. 3 misfire detected. po306-cylinder no. 6 misfire detected
Trouble code P1131 means: Lack Of HO2S11 Switches - Sensor Indicates Lean
Trouble code P1131 means: Lack Of HO2S11 Switches - Sensor Indicates Lean
po303 is cylinder 3 misfire. I would start with cylinder #3 spark plug wire, look very carefully for chafed, worn or cracked spark plug wire, then check spark plug itself. If it is still acting up do a compression check on cylinder #3 to see if head gasket leaking. If all that looks okay it may be the #3 fuel injector failure.
The code P0340 indicates that the control computer detected a problem with the camshaft position sensor CIRCUIT. Since the code indicates that it's the circuit, there could be a problem with the sensor, the wiring or the PCM. If you just replace the CPS, you may not solve the problem, especially if it's a wire, connector or the control computer.
How fix code P1140
how fix Code P1140 fuel air
Here is a video on how to fix engine code p0449