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C70 cruise control clutch position sensor problem

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

Philthy
Posts: 5
Joined: Sat Oct 05, 2019 9:23 am
Year and Model: C70 2005
Location: Devon
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Great Britain
Philthy

C70 cruise control clutch position sensor problem

Post by Philthy » Sat Oct 05, 2019 11:22 am

Hi, having read this forum for several years, I thought it time to sign up, and give something back.
I recently noticed that my cruise control had stopped working. This is a problem for me, as we drive from the UK to Southern France several times a year. A 14 hour drive without CC was not an option, so time to read some obd codes. The code was P0805 (clutch position sensor). After removing the trim under the steering wheel, it is very easy to get at, and takes seconds to replace. In fact, it took me longer to remove and replace the trim. The volvo original part cost me just over £50, so about $70US. It is possible to fix it very cheaply, by soldering a resistor across it, to bring the sensor back within tolerance.
A picture paints a thousand words, but a YouTube video speaks volumes:

Replacing the sensor:


Fixing it for pence:


I hope this saves somebody a few hours researching the problem, and several bucks fixing it.

Thanks, Phil