Engine management light

[N1554N]

i know there are a lot of questions on this, but all i want to know is:
if the engine management light comes on when driving, but then after parking the car over night it doesn't show up the next day, does this mean it was a glitch? or should i still get it checked out?
it still appears (and stays on) if i just have the ignition on (no engine running) along with the handbrake light and battery light and oil light...but i thought this was a normal thing...

 

[frank]

any faultcodes ?

 

[N1554N]

any faultcodes ?

not that i can see. just the EML symbol. i have heard you can get codes to flash up by shorting a couple of terminals but not sure if this is something i want to do - is it risky?

 

[frank]

not that i can see. just the EML symbol. i have heard you can get codes to flash up by shorting a couple of terminals but not sure if this is something i want to do - is it risky?

i think thats on the earlier obd1 type, codereaders for your system are dirt cheap nowadays eh

 

[Ed]

ecu light whilst driving is BAD. ECU light with ignition on but engine stopped is normal.

Give me a call or bring it to me if you suspect something is wrong and I'll take a look.

 

[N1554N]

ecu light whilst driving is BAD. ECU light with ignition on but engine stopped is normal.

Give me a call or bring it to me if you suspect something is wrong and I'll take a look.

well it came on when i was driving one day, but now its gone. is it supposed to do that?

 

[Ed]

No. What year is the car? If its pre 2000 then it may be a faulty ECU. If its post 2000 then it may just be a sensor failure.

 

[N1554N]

its a Y reg 2001.....

 

[essexpunx]

I had my EML light come on, on my 2001 1.4, and i also had a bad misfire, had it code read at the local Nissan specialists and it came up with a lamda problem, car was due a service anyway so changed plugs and airfilter etc etc, also disconnected the battery overnight, next day no problems and it's been that way for nearly a year lol, i've also had the EML light come on, on a micra i owned a few years ago with no running problems, disconnected the battery for a few hours no more EML probs so might be worth a try first if the EML comes on again.

 

[N1554N]

thanks for the help. i think it probably needs a bit of a minor service. if i look at the lambda sensor (i assume there is only one and its located on the exhaust manifold) how do i know if it needs replacing? or is that something only a diagnostic can tell me..??

 

[essexpunx]

There are two lamda sensors on my 1.4 it was the first one on the manifold but i never replaced it, usually get running probs with a faulty sensor, if your cars running fine and the EML is now off i wouldn't worry overly but you can get it fault read as the code should be stored