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m3vert

Member Since: 15 Mar 2018
Location: Central Scotland
Posts: 162

2011 Defender 110 2.5 TD PU Stornoway Grey

P193514 Brake Switch/Sensor Signal fault- Help please!

I have had a few of the P193514 fault codes show up which my local garage thought were a sensor signal fault. They have replaced the 2 switches they thought were the likely cause but alas the fault code keeps re-appearing!
They are at a bit of a loss as to what is the issue and as they closed tonight for New Year break they gave me the landy back. They are going to make some enquiries with people they know who know Defenders better than themselves but I thought I would ask on here if anyone has any idea what could be causing this issue?
Only history I have where I had issues is the handbrake cable got fried when my battery moved as securing mechanism worked loose and battery terminal shorted out. However this was 18 months ago, maybe more. So i doubt that is related?

Any help much appreciated

Thanks

30th Dec 2020 8:55pm

dorsetsmith

Member Since: 30 Oct 2011
Location: South West
Posts: 4554

abs ? as hand brake and fluid level switch is link to it

have you checked that ecm seeing state from the brake switch i think one switch is norm close for ecm and brake light norm open

if you have open cct wiring for ecm it will not see state change from the switch

30th Dec 2020 9:34pm

llessur

Member Since: 15 Nov 2011
Location: Hereford
Posts: 151

As I have just developed a similar issue, I wondered if this was resolved and the cause identified. I have working brake lights, hand brake light and fluid level indicator, but the P193514 code comes straight back up after it has been cleared.

13th Jan 2021 9:00pm

Matt_H

Member Since: 19 Sep 2018
Location: Cornwall
Posts: 45

2009 Defender 90 Puma 2.4 XS CSW Zambezi Silver

Hello there all,

Did this challenge ever get solved?

I have the same issue - the three dash lights, the same error code, and I've replaced both pedal switches. I clear the error off and the three lights (and same error code) just come straight back again immediately when I start the engine.

Has anyone got to the bottom of this?

Many thanks,
Matt

6th Sep 2025 5:13pm

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20967

Make sure brake fluid level is at Max. ____\We|Will|Win/___
____/🇬🇧🇺🇸\____
_//*⛽️🛢️⚙️🧰*\\_

6th Sep 2025 5:17pm

90 Dreamer

Member Since: 13 Jul 2019
Location: Oop North
Posts: 2284

2016 Defender 90 Puma 2.2 HT Corris Grey

Brake fluid level should only be at MAX when all components are new…..as everything wears the level will naturally fall and if left too long the Fluid / Handbrake warning light illuminates to warn you…..

6th Sep 2025 5:24pm

Matt_H

Member Since: 19 Sep 2018
Location: Cornwall
Posts: 45

custom90 wrote:
Make sure brake fluid level is at Max.

All fine, level at max, contacts are clean, no change and fault still returns.

8th Sep 2025 9:50pm

MK

Member Since: 28 Aug 2008
Location: Santiago
Posts: 2497

2007 Defender 110 Puma 2.4 SW Chawton White

According to the manual: Brake Sensor/Switch Signal - Short to Ground or Open Circuit Puma 110" SW

.............................................................
Earth first. Other planets later

9th Sep 2025 1:19pm

Matt_H

Member Since: 19 Sep 2018
Location: Cornwall
Posts: 45

Many thanks for this.

I'm assuming this is the blue and white switch, not the black one (why there are two, but just one descriptor in the error code I do wonder!). Any insight as to where that wiring run and earth might be?

Thanks again

9th Sep 2025 7:53pm

MK

Member Since: 28 Aug 2008
Location: Santiago
Posts: 2497

You can have a look into the landrover workshop web page. You will find almost all electrical diagrams. Puma 110" SW

.............................................................
Earth first. Other planets later

9th Sep 2025 9:30pm

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