'CHECK ENGINE' light on

FALKLANDER · 9th May 2016, 20:11

I have noticed this last week that the 'CHECK ENGINE' light has been coming on intermittently but now is on full time when engine revs are less that 1400rpm but goes out when that speed is reached. Engine runs perfect.
Any ideas?

klarzy · 9th May 2016, 20:13

Quote:

Originally Posted by FALKLANDER

I have noticed this last week that the 'CHECK ENGINE' light has been coming on intermittently but now is on full time when engine revs are less that 1400rpm but goes out when that speed is reached. Engine runs perfect.
Any ideas?

First posts of call for me are MAF sensor, MAP sensor and EGR bypass control valve

Mike Noc · 9th May 2016, 22:21

Worth checking and cleaning the LP and HP fuel pressure sensor plug connections. The LP sensor sits on top of the fuel filter, and the HP sensor is on the end of the common fuel rail.

Does your car have a manual or automatic gearbox? The MIL comes on for a couple of extra items if an automatic box is fitted.

Kiltman · 10th May 2016, 06:04

I had a similar issue, tried what Mike said and no problem since.

9th May 2016, 20:11	#1
FALKLANDER Newbie Rover 75 Tourer Contemporary CDTi SE Join Date: Apr 2010 Location: Tenby, Pembrokeshire Posts: 13 Thanks: 0 Thanked 1 Time in 1 Post	'CHECK ENGINE' light on I have noticed this last week that the 'CHECK ENGINE' light has been coming on intermittently but now is on full time when engine revs are less that 1400rpm but goes out when that speed is reached. Engine runs perfect. Any ideas?

9th May 2016, 22:21	#3
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: 11,551 Thanks: 3,470 Thanked 3,119 Times in 2,247 Posts	Worth checking and cleaning the LP and HP fuel pressure sensor plug connections. The LP sensor sits on top of the fuel filter, and the HP sensor is on the end of the common fuel rail. Does your car have a manual or automatic gearbox? The MIL comes on for a couple of extra items if an automatic box is fitted.

10th May 2016, 06:04	#4
Kiltman I really should get out more....... MG ZT CDTi 135 / Rover 75 Club SE 160 Join Date: Jun 2011 Location: Leek Posts: 2,013 Thanks: 235 Thanked 128 Times in 104 Posts	I had a similar issue, tried what Mike said and no problem since.