Why is the Check Engine light not on?
Why is the Check Engine light not on?
When you have the key on, and the engine is not running, the check engine light is not on. Before you go to a lot of unnecessary work, let’s test the fuses first. Checking the wiring diagram, there are three fuses for this circuit.
How old is the Check Engine light bulb?
I have seen quite a few times the inability to communicate with the ECM through a scanner, but no “check engine” with the key in the “ON” position, not so familiar to me. Sure the bulb is 14 years old but how many hours has it burned for, probably not many, pretty odd.
What does the OBD scanner say about no check engine light?
The OBD scanner says code U1001 or something like that which is no communication with ECM/ PCM. The only other things it says is MIL on and compression good. All else is N/A. helpful? Please confirm that it is a U1001. If it is, recheck all fuses in the under hood fuse box.
When does the Check Engine light come on in a Toyota Avalon?
When you turn the key to the run position, the check engine light should come on. When you start the engine, the light should go out within a few seconds of startup. If your light does not come on, and you have emissions inspections in your state, your Avalon will not pass the inspection for your plates.
When does no check engine light, no start?
If no keyed accessory is working ( works only in on position, then I’d look at the ignition switch, as well. To clarify, you are saying the rig doesn’t start, either, right? I just got a check engine light when i put in the key and it did start but then died after 5 min….. Just like it did on the highway…
Why is my Check Engine light not coming on after first Tut?
Turn the key on all the check lights come on except the check engine light,theirs no spark no fuel pump. It has an old battery but it still turns the motor over good just checked batt. 13.06volts . I think my computer controll is dead (ECU , ECI) im not sure what to call that black box. My car has 182724 miles.
I have seen quite a few times the inability to communicate with the ECM through a scanner, but no “check engine” with the key in the “ON” position, not so familiar to me. Sure the bulb is 14 years old but how many hours has it burned for, probably not many, pretty odd.
Why does my engine light not come on?
The light should come on when you turn the key to “ON,” and it should go out after the engine starts. If it NEVER comes on I’d suspect the bulb. Most CELs ground through the ECM so if the first suspect bulb is good then there could be an ECM fault. Hopefully it’s the bulb.
