Check engine light not turning on

Alexandru.Edward · 20th June 2018, 21:41

Hello everyone,

I have a problem with the check engine light.
When I turn the key to position II, the check engine light don't appear on the dash.
But, I run a speedo lights test and here the bulb it's working:
LINK

Maybe the previous owner cut some cables and the check engine light will not turn on?
The ECU it's dry, never been to swimming lessons.

klarzy · 20th June 2018, 22:57

Unplug your MAF sensor and then turn the engine on.... does the Light then come on?

Alexandru.Edward · 20th June 2018, 23:26

Nope, still off.
Maybe it's a fuse? A broken wire? Something it's blocking the ECU for that start up check. The immobiliser has something to do with that?

Also, the seatbelt warning light doesn't light up, this might have something in common?

Mike Noc · 21st June 2018, 06:52

The earlier diesels don't illuminate the check engine light as a self test with key to position II.

Mike Noc · 21st June 2018, 07:08

Quote:

Originally Posted by klarzy

Unplug your MAF sensor and then turn the engine on.... does the Light then come on?

Only the later versions bring the light on when you unplug the MAF Pete.

stevestrat · 21st June 2018, 08:45

Quote:

Originally Posted by Mike Noc

The earlier diesels don't illuminate the check engine light as a self test with key to position II.

I thought I read that somewhere but didn't want to post it as I wasn't 100% sure.

Alexandru.Edward · 21st June 2018, 18:29

Thanks for help. I thought something was wrong with the ECU. Didn't know that earlier versions don't take a self test for check engine.

20th June 2018, 21:41	#1
Alexandru.Edward Regular poster Rover 75 Saloon Join Date: Apr 2018 Location: Bucharest Posts: 53 Thanks: 56 Thanked 1 Time in 1 Post	Check engine light not turning on Hello everyone, I have a problem with the check engine light. When I turn the key to position II, the check engine light don't appear on the dash. But, I run a speedo lights test and here the bulb it's working: LINK Maybe the previous owner cut some cables and the check engine light will not turn on? The ECU it's dry, never been to swimming lessons.

20th June 2018, 22:57	#2
klarzy This is my second home none but not gone Join Date: Mar 2013 Location: March, Cambs Posts: 16,437 Thanks: 894 Thanked 4,247 Times in 3,025 Posts	Unplug your MAF sensor and then turn the engine on.... does the Light then come on? __________________ [SIGPIC][/SIGPIC]….All praise Bananaswan….

20th June 2018, 23:26	#3
Alexandru.Edward Regular poster Rover 75 Saloon Join Date: Apr 2018 Location: Bucharest Posts: 53 Thanks: 56 Thanked 1 Time in 1 Post	Nope, still off. Maybe it's a fuse? A broken wire? Something it's blocking the ECU for that start up check. The immobiliser has something to do with that? Also, the seatbelt warning light doesn't light up, this might have something in common? Last edited by Alexandru.Edward; 20th June 2018 at 23:49.. Reason: EDIT

21st June 2018, 06:52	#4
Mike Noc This is my second home Rover 75 CDT Manual Connoisseur SE, Rover 75 CDT Automatic Connoisseur SE & a Freelander Td4. Join Date: Jul 2009 Location: Hampshire Posts: 11,550 Thanks: 3,470 Thanked 3,119 Times in 2,247 Posts	The earlier diesels don't illuminate the check engine light as a self test with key to position II.

21st June 2018, 18:29	#7
Alexandru.Edward Regular poster Rover 75 Saloon Join Date: Apr 2018 Location: Bucharest Posts: 53 Thanks: 56 Thanked 1 Time in 1 Post	Thanks for help. I thought something was wrong with the ECU. Didn't know that earlier versions don't take a self test for check engine.