Error code P1666

janker · 29th October 2022, 15:56

Hi everyone
I have a MG 190 V6 which is running fine but i was just using Toaf to see if any error codes showing and i have this code logged P1666 Engine anti theft signal circuit malfunction.
Signal out of range/test complete/sporadic error.
Would anybody have any ideas if something is failing? as i say car runs fine.
thanks julian

Yorkshire GOC · 29th October 2022, 17:56

Have a look here - the list of relevant codes from Lates - as you see PO 1666 does not feature - I sometimes get a code which is apparently a BMW only MEMS3 code and is spurious for our cars so assuming Lates list is complete I think it is BMW code.

Post 5 onwards.

https://www.the75andztclub.co.uk/for...t=42209&page=2

janker · 29th October 2022, 19:40

Quote:

Originally Posted by Yorkshire GOC

Have a look here - the list of relevant codes from Lates - as you see PO 1666 does not feature - I sometimes get a code which is apparently a BMW only MEMS3 code and is spurious for our cars so assuming Lates list is complete I think it is BMW code.

Post 5 onwards.

https://www.the75andztclub.co.uk/for...t=42209&page=2

Many thanks Yorkshire GOC for the list and very strange.

SD1too · 30th October 2022, 07:03

Quote:

Originally Posted by Yorkshire GOC

Have a look here - the list of relevant codes from Lates - as you see PO 1666 does not feature

Hi Martin,

Lates admits in that thread that the list is "generic". None of the codes has the "P" prefix either so best ignored I think.

Julien; i have looked in RAVE for you and P1666 is listed. It confirms your findings with TOAF:
Engine anti-theft signal circuit malfunction. Anti-theft code, no successful communication.

Simon

janker · 30th October 2022, 18:02

Quote:

Originally Posted by SD1too

Hi Martin,

Lates admits in that thread that the list is "generic". None of the codes has the "P" prefix either so best ignored I think.

Julien; i have looked in RAVE for you and P1666 is listed. It confirms your findings with TOAF:
Engine anti-theft signal circuit malfunction. Anti-theft code, no successful communication.

Simon

Hi Simon many thanks or looking any ideas what this could be failing or do i just wait and see.
thanks julian

janker · 7th November 2022, 22:49

Hi everyone
I think i have the answer to my code , after thinking about it i remember my wife trying to borrow my car one day with spare set of keys but she didnt realise one of them on the keyring was a spare blank on the keyring, It fitted ignition but wouldnt allow her to start as no chip inside it.

Gave me some very bad words about my unreliable car saying it wouldnt start but turned over fine , i came home from work realised what she had used and started straight away with the correct spare key.

maybe this had been logged in the system ?

thanks everyone

Yorkshire GOC · 8th November 2022, 06:33

If you have a code reader - clear the error code and see if it resets or not - if not then you may have your answer.

janker · 9th November 2022, 22:02

Quote:

Originally Posted by Yorkshire GOC

If you have a code reader - clear the error code and see if it resets or not - if not then you may have your answer.

Cheers that's exactly what im going to do will let you know.

29th October 2022, 15:56	#1
janker Loves to post Rover 75 Saloon & MGZT 190 Join Date: Jun 2012 Location: Leek Posts: 390 Thanks: 333 Thanked 57 Times in 39 Posts	Error code P1666 Hi everyone I have a MG 190 V6 which is running fine but i was just using Toaf to see if any error codes showing and i have this code logged P1666 Engine anti theft signal circuit malfunction. Signal out of range/test complete/sporadic error. Would anybody have any ideas if something is failing? as i say car runs fine. thanks julian __________________ This vehicle was the 53,401st 75 to run off the production line, out of 112,381 This vehicle was the 2,551st 75 CDT Club to be made out of 3,403 This vehicle was the 5,192nd 75 in White Gold Metallic (code: GMN) to be made out of 12,251 White Gold Metallic 75s My New Addition MGZT 190 Trophy Blue 2001 Petrol.

29th October 2022, 17:56	#2
Yorkshire GOC I really should get out more....... Rover 75 connoisseur se v6 auto Join Date: May 2014 Location: Hull Posts: 2,069 Thanks: 1,842 Thanked 623 Times in 469 Posts	Have a look here - the list of relevant codes from Lates - as you see PO 1666 does not feature - I sometimes get a code which is apparently a BMW only MEMS3 code and is spurious for our cars so assuming Lates list is complete I think it is BMW code. Post 5 onwards. https://www.the75andztclub.co.uk/for...t=42209&page=2 __________________ She came off the Longbridge Line on 20-05-2003 The Silver Machine was the 13th of 160 Rover 75's to come off the production line that day and is the 100th of 527 Starlight Silver Rover 75 2.5 V6 Connoisseur SE Auto saloons listed in the build records produced world wide.

7th November 2022, 22:49	#6
janker Loves to post Rover 75 Saloon & MGZT 190 Join Date: Jun 2012 Location: Leek Posts: 390 Thanks: 333 Thanked 57 Times in 39 Posts	Hi everyone I think i have the answer to my code , after thinking about it i remember my wife trying to borrow my car one day with spare set of keys but she didnt realise one of them on the keyring was a spare blank on the keyring, It fitted ignition but wouldnt allow her to start as no chip inside it. Gave me some very bad words about my unreliable car saying it wouldnt start but turned over fine , i came home from work realised what she had used and started straight away with the correct spare key. maybe this had been logged in the system ? thanks everyone __________________ This vehicle was the 53,401st 75 to run off the production line, out of 112,381 This vehicle was the 2,551st 75 CDT Club to be made out of 3,403 This vehicle was the 5,192nd 75 in White Gold Metallic (code: GMN) to be made out of 12,251 White Gold Metallic 75s My New Addition MGZT 190 Trophy Blue 2001 Petrol.

8th November 2022, 06:33	#7
Yorkshire GOC I really should get out more....... Rover 75 connoisseur se v6 auto Join Date: May 2014 Location: Hull Posts: 2,069 Thanks: 1,842 Thanked 623 Times in 469 Posts	If you have a code reader - clear the error code and see if it resets or not - if not then you may have your answer. __________________ She came off the Longbridge Line on 20-05-2003 The Silver Machine was the 13th of 160 Rover 75's to come off the production line that day and is the 100th of 527 Starlight Silver Rover 75 2.5 V6 Connoisseur SE Auto saloons listed in the build records produced world wide.