check engine light is on!whats wrong?

[cyrus fang]

i just borght a 2004 holden VY03A 2 weeks ago. 100km. and i did a big service. everything is fine but got one problem! when i driving everything is fine...drive like new....but stop without turning off the engine like 10mins. the check engine light is on! anyone noe whats wrong with my car!?

[caaf]

It could be any number of things.. Mind I do sit around an under voltage issue maybe... What testing have you done already.. What's the error codes are you getting?

[colgf]

my guess is it is an Oxygen Sensor problem. There are 2 of them in exhaust manifold on a v6 engine , about
$80 each , easy to change .

[Chrisvyss]

could be anything o2 sensor throttle sensor oil pressure sensor to many bloody sensors

[Not_An_Abba_Fan]

Try tightening your battery terminals.

[SkidMarks]

mines the same now. i pulled off my whole air intake from throttlebody to box then when i reassembled the engine light came on. what could be the cause? 02 sensor? throttle sensor? help me too haha.

[colgf]

you may have an ambient air leak into the inlet manifold somewhere after the MAF sensor , check your rubber tubes to the heater actuators at the rear of the inlet manifold & the brake booster vacuum hose . make sure the inlet ducting is airtight to the throttle body. Still reckon its the Oxy sensors though......

[Not_An_Abba_Fan]

Did you plug the air temp sensor back in?

[SkidMarks]

yeah i did lol. possibly a leak somewhere, may not be air tight. but im guessing ive definitely buggered a sensor along the intake somewhere.

[carlz04]

Our check engine light started coming on then the motor blew up (injector was staying open and sump had a hole in it)