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Discussion Starter · #1 ·
Hello everyone.

First time posting on the forum in an attempt to help my mate with his 207. I am no mechanic.. just armed with a cheap code reader and everyone's mate Google.

Peugeot 207 1.6 GT 57 plate, 57K

He is having trouble with it starting. Turns over nice and strong but takes a good 10-15 second before she fires up. Pumping the throttle tends to help the situation. Once running the engine sounds nice and smooth but he says it feels very sluggish and underpowered.

Code reader throw up code PO343 - Camshaft position Sensor.

He tells me the sensor was replaced around a six months ago which didn't solve the issue but has just lived with it until now.

I measured the sensor and incoming loom yesterday and found the following (attached image).

I have since done some googling and it would appear that for some reason I have got volts on the sensor output pin... which I would suggest accounts for the ECM thinking the Cam sensor is pulling high.

Can someone please confirm the reference voltage for this sensor and the pin out configuration??


One other point of note. The de-pollution warning comes on the other dash but doesn't give a stored DTC? Could a problem with the DPF system cause a false high reading on the Camshaft sensor?

ECM locking the CMP sensor to a high level to throw additional fuel into the system trying to regen the DPF?

Any help would be greatly appreciated.

Thanks
 

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P0343 isn't camshaft position sensor. It's Inlet cylinder reference sensor signal fault.

The thp engines have some slightly different code descriptions that appear from generic code readers.

Sent from my SM-G925F using Tapatalk
 

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Discussion Starter · #3 ·
ADS77 thank you for the reply.

I shall do some more googling around this instead then.

For clarification the sensor I have been looking at and took the measurement is in the top right corner of the head. Top yellow circle in the attached circle.
 

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