"ER" on aircon panel display

brook shaw · 25th August 2016, 23:04

when i switch ac on , after 30 secs the words ER appear where the temperature usually shows.

"er" stays on till the car is switched off and restarted.
im foxed on this one

humptynumpty · 25th August 2016, 23:17

fuse buddy, i think number 4

saxo1980 · 25th August 2016, 23:38

fuse 4 is for the gearbox for the auto box aint it took that out many ov times in the past lol but i maybe wrong

SD1too · 26th August 2016, 08:03

Quote:

Originally Posted by brook shaw

when i switch ac on , after 30 secs the words ER appear where the temperature usually shows.

According to MG Rover Richard, that means that you have a K-bus fault to the BCU.

In addition, you could run the ATC diagnostics to see if any further faults are reported which might help:

Press and simultaneously hold the 'Auto' and the air distribution buttons.
Turn the ignition key from '0' to 'II' (which I believe is 'ign. on').
Wait whilst all the control panel indicators cycle on and off.
'FC' appears in the LH window and a two digit fault code on the RH side. '00' means no fault found. Ignore '21' and/or '22' which follow low light levels to the sunlight sensors.
To revert to normal operation press 'Off' or turn the ignition key back to '0'.

Simon

klarzy · 26th August 2016, 08:24

pull the battery for 30 mins +

if it reoccurs then the k-bus is being pulled to ground...

BigRuss · 26th August 2016, 22:58

Just repaired one like this today, is the heatred rear window not working either and are there any other faults?
It's most likely to be a K-bus issue with a module if you have a FBH then try disconnecting it see if the fault disappears, if not then it's a case of disconnecting one by one the modules connected to K-Bus

If that doesn't work then it's likey to be corrosion inn the K-bus header under the carpets were all the wires from the various modules join this often happens if the carpets have been wet for a while

In todays case it was a bit more complex there was a K-bus controller problem caused by the FBH but some numpty had tried to resolve the issue by cutting the K-bus wire at the IPK and LSM and joining both of them together effectively isolating them from the rest of the system. End result no Sat-nav, ATC instant ERR message on selecting A/C, door s would only unlock on remote.
All issues solved upon rejoining the cut wires and unplugging the FBH plugs

Russ

Mike Noc · 27th August 2016, 08:50

Don't you just love it when people add their own faults into the mix Russ.

brook shaw · 27th August 2016, 13:16

big russ..
its my car you sorted..
many thanks for your sterling efforts...

this guy needs a medal..lol
ive gone away very happy.thanks russ

25th August 2016, 23:04	#1
brook shaw Regular poster MG ZT 190 + 2001 conny cdt 2000 conny se 2.5 Join Date: Jan 2013 Location: SHEFFIELD -the cold city with lots of hills Posts: 55 Thanks: 1 Thanked 4 Times in 1 Post	"ER" on aircon panel display when i switch ac on , after 30 secs the words ER appear where the temperature usually shows. "er" stays on till the car is switched off and restarted. im foxed on this one

25th August 2016, 23:38	#3
saxo1980 Gets stuck in BMW 118i m sport Join Date: Dec 2014 Location: Home Posts: 524 Thanks: 506 Thanked 174 Times in 77 Posts	fuse 4 is for the gearbox for the auto box aint it took that out many ov times in the past lol but i maybe wrong Last edited by saxo1980; 25th August 2016 at 23:44..

26th August 2016, 08:24	#5
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	pull the battery for 30 mins + if it reoccurs then the k-bus is being pulled to ground... __________________ [SIGPIC][/SIGPIC]….All praise Bananaswan….

26th August 2016, 22:58	#6
BigRuss Premium Trader 75 CDT Tourer,2.5 Launch Saloon, Omipro MG/Rover (T4) Join Date: Jul 2007 Location: Liversedge, West Yorkshire Posts: 5,405 Thanks: 1,105 Thanked 1,340 Times in 661 Posts	Just repaired one like this today, is the heatred rear window not working either and are there any other faults? It's most likely to be a K-bus issue with a module if you have a FBH then try disconnecting it see if the fault disappears, if not then it's a case of disconnecting one by one the modules connected to K-Bus If that doesn't work then it's likey to be corrosion inn the K-bus header under the carpets were all the wires from the various modules join this often happens if the carpets have been wet for a while In todays case it was a bit more complex there was a K-bus controller problem caused by the FBH but some numpty had tried to resolve the issue by cutting the K-bus wire at the IPK and LSM and joining both of them together effectively isolating them from the rest of the system. End result no Sat-nav, ATC instant ERR message on selecting A/C, door s would only unlock on remote. All issues solved upon rejoining the cut wires and unplugging the FBH plugs Russ __________________ Replacement Key Service http://https://the75andztclub.co.uk/...d.php?t=244732 Full T4 Testbook diagnostics available. Diesel ECU repair and replacement. Options enabled or disabled as required. Diesel X-Power 135 and 160bhp, Rover 1.8T 150 to 160 MG 160 V6 to 177 upgrades available P.M. for details.

25th August 2016, 23:17	#2
humptynumpty Retired Health Join Date: Mar 2013 Location: GB Posts: 1,901 Thanks: 8 Thanked 46 Times in 42 Posts	fuse buddy, i think number 4

27th August 2016, 08:50	#7
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: 11,548 Thanks: 3,470 Thanked 3,119 Times in 2,247 Posts	Don't you just love it when people add their own faults into the mix Russ.

27th August 2016, 13:16	#8
brook shaw Regular poster MG ZT 190 + 2001 conny cdt 2000 conny se 2.5 Join Date: Jan 2013 Location: SHEFFIELD -the cold city with lots of hills Posts: 55 Thanks: 1 Thanked 4 Times in 1 Post	big russ.. its my car you sorted.. many thanks for your sterling efforts... this guy needs a medal..lol ive gone away very happy.thanks russ