fuel cap warning

[derek taylor]

fuel cap not closed shows on dashboard readout plus orange triangle shows
does anyone know is there a accessible switch for it anywhere
307 hdi 2.0 sport 57 plate fault sign only comes on when you start to drive

[jmkent]

Likely to be the sensor at the top of the filler neck. Not too expensive to replace, but needs to be done asap or else you will have DPF problems as no fluid will be pumped into the tank after a fill up.
Post last 8 digits of vin no. and I can post up a pic for you

[derek taylor]

Originally Posted by jmkent

likely to be the sensor at the top of the filler neck. Not too expensive to replace, but needs to be done asap or else you will have dpf problems as no fluid will be pumped into the tank after a fill up.
Post last 8 digits of vin no. And i can post up a pic for you

85022561

[jmkent]

I believe the filler cap sensor is part no.20 - Peugeot rrp £64.38 incl VAT

[derek taylor]

Originally Posted by jmkent

I believe the filler cap sensor is part no.20 - Peugeot rrp £64.38 incl VAT

thanks will check the wiring first

[jmkent]

There is a thread on here somewhere that details what resistance you should get with the cap open and closed.... good place to start

Part way down Diesel Fuel Filling Cap Sensor. info please tells how to get to the sensor and to check it, although I thought the resistance should be 150 rather than 300 (from memory somewhere else)

[derek taylor]

Originally Posted by jmkent

There is a thread on here somewhere that details what resistance you should get with the cap open and closed.... good place to start

Part way down Diesel Fuel Filling Cap Sensor. info please tells how to get to the sensor and to check it, although I thought the resistance should be 150 rather than 300 (from memory somewhere else)

thanks good info

[jmkent]

Here was the link where I read 150 ohms.... 407 1.6 HDi Fuel Cap Sensor (albeit for the 407)

[derek taylor]

ok got the sensor off what happends if i just cut it off and replace it with a read switch ?

[davidireland]

Originally Posted by derek taylor

ok got the sensor off what happends if i just cut it off and replace it with a read switch ?

The additive ecu needs to read the resistance off the sensor. Its not a simple on/off.