EFI code
Author
Discussion

drivingfroggy

Original Poster:

455 posts

208 months

Monday 13th May 2013
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I keep getting a random EFI fault code flashing up on the dash. Anybody have any idea which plug might be loose, or which component might be failing?

S6 Devil

3,556 posts

249 months

Monday 13th May 2013
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What code is it?
Some TVR Tuscan owners report that the EFI warning dash light will flicker on and off or come on randomly, usually due to moisture in the engine bay. Many people report having this problem just after washing the car or in wet weather. Code L sometimes flickers on and off randomly but is usually nothing to worry about! The EFI warning light will usually stay on if there is a more serious problem. Below are the diagnostic codes for the Tuscan MkI.

A - Speedo sensor not activating zero switch
B - Speedo sensor not releasing zero switch
C - Water level sensor not activating zero switch
D - Water level sensor not releasing zero switch
E - Fuel level sensor not activating zero switch
F - Fuel level sensor not releasing zero switch
G - Water level sensor open circuit
H - Air temp sensor open circuit
I - Oil temp sensor open circuit
J - Oil pressure sensor open circuit
K - Fuel level sensor open circuit
L - Erratic road speed sensor input
O - No communications between analogue and control

drivingfroggy

Original Poster:

455 posts

208 months

Monday 13th May 2013
quotequote all
Thanks for the reply. The code actually reads EFI Fault. The car runs OK. pulls OK, overtakes Golf GTI's OK the whole lot. It looks like a loose connection, but I was under the bonnet yesterday and couldn't find anything obviously wrong.

anonymous-user

70 months

Monday 13th May 2013
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I had that code when the connection to the top of the airbox was faulty.

Druid

1,312 posts

197 months

Monday 13th May 2013
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Had that with a Lambda sensor not switching. A laptop should help diagnose!

drivingfroggy

Original Poster:

455 posts

208 months

Tuesday 14th May 2013
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Good replies, thanks. i hope it's not a lambda, they're only 18 months or two years old

volks al

4,107 posts

230 months

Monday 20th May 2013
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Wet airbox sensor for me always after washing