Check Engine Light Diagnosis for AEG engine code

[Wojomojojo]

Check engine light is caused by:

Check Fuses 1st, 2nd chrck wiring, 3rd check the component. If all checks out then replace ECM (unlikely).

Heated 02 sensor (before cat) {sensor heater 1.0 - 5.o ohms at room temperatore}Tab on top 1st and 2nd connectors.

O2 sensor (after cat)

Maf sensor (intake plastic tube connected to filter box {4.5 v )

Throttle Valve Control Module (throttle body)

Engine Coolant Temperature Sensor (coolant hose, green or black)
-BLACK (tab up right most top and bottom connector bridge these, if indicator jumps to 141 degrees or -46.5 degrees Celsius, replace with green sensor) Resistance test left most connectors (same resistance of green).
-GREEN (tab down right most connectors nominal value 1.5 - 2.0 k ohm for 30 degree celsius. 275 - 375 ohm for 80 degree celsius.

Intake Air Temperature Sensor (component of MAF sensor) parking brake on. Tab up 1st and 3rd connector.
-30C should cause 1.5 to 2.0 k ohm.
-80C should cause 275 to 375 ohm


Check Engine Speed (RPM) Sensor (Right of oil dipstick, if engine will not start) Tab down, top and middle connector 480 -1000 ohm nominal resistance. Bottom and middle connector infinite resistance, bottom and top infinite resistance nominal, If other resistance is measured replace.

Fuel Injectors (injector rail, nominal resistance 14-18 ohms between connectors)

Fuel Pressure Regulator (nominal pressure 3.5 bar)

Oxidized connectors are a possible cause of engine control component trouble. Resolve this with CAIG's DEOXIT found at Cumberland Electronics in Harrisburg.

Please Contribute if you have additional information.

[jet5nine]

do you have all these codes in your car or are you just posting what could cause it? because there is a heck of alot more stuff that causes it then just that. theres a list of every single code floating around here somewhere.

[Wojomojojo]

These are some of the most likely components to fail. This list gives a DIY'er a good place to start troubleshooting without the aid of an OBDII scan.