P0299 and P1351 codes

[Romtag]

Hi,

My Peugeot 807 has been fine, until today when it just spluttered to a stop, and now rev's OK but does not drive at all, it has no power in the engine. To the extent that I cannot drive the car from where I have managed to park it on the street.

I have plugged in a simple OBD2 reader, and it gave me the following error codes P0299 and P1351 - A quick google suggests that the glowplugs may have died, but the information seems conflicting, and that it it could be turbo related?

Any help or advice really gratefully received as I am not able to get it looked at straight away so I would like an idea of costs etc...

[GiveMeABreak]

Hi Mark, you can ignore the P1351 - that's a common glow plug or glow plug relay fault common in most HDIs.

You issue is with P0299:

Fault Code:	P0299
Description of Fault:	Turbocharger pressure signal: Pressure too low in relation to the reference value. Difference negative for 10 seconds, between the turbo pressure reference and the measured turbo pressure: The turbocharger pressure is below 800 mbars at the reference point, for an external temperature of 20 °C and at an altitude of 0 m. Conditions of activation of the diagnostics: Engine speed above 1000 rpm The actual engine torque is higher than 70 Nm
Conditions for Fault to clear:	Driving for 5 minutes
Downgrade Modes whilst Fault is active:	Downgrade ASR mode (Torque limitation for traction control) Deactivation of the ASR (Wheel anti-skid ) Deactivation speed limiter until the next time the ignition is switched on Deactivation of the speed limiter Deactivation of the cruise control Deactivation cruise control until the next time the ignition is switched on Closing of the EGR (exhaust gas recycling) valve
Symptoms:	Lack of power Noise Smoke from the exhaust
Suspect Areas:	Air meter restricted Clogged air filter Obstacle obstructing the air passage Air lock between compressor and engine Turbocharging pressure sensor Turbocharger position copy sensor Vacuum problem Turbocharger

[Romtag]

Where is that on the car Marc, could you share location drawings for me so I can I look tomorrow and see if I can see any damaged hoses etc. Hopefully not to expensive to fix ...

[GiveMeABreak]

Obviously if it's the turbo or turbo position copy sensor that will be the whole turbo, otherwise check all your air hoses and air filter and especially the air filter enclosure.

Here's the Turbo Air Piping:

[Romtag]

Thanks Marc as always, I'll have a look in the morning and see what I can find

[Romtag]

Yep. It's the turbo, are you able to tell me what model it should be Marc, so I can go off and Google if it's worth replacing or scrapping?

The mechanic said I need to check too to see if my engine has a a 'wet belt' as that can cause the turbo to block, but I've never heard of that before?

I'm trying to work out costs to see if it is economical to repair or not.

[GiveMeABreak]

Wet belt? - on this model? It's a bit old to have that on a PSA vehicle . Belt in Oil systems are generally found on the later 1.2 EB2 petrol engines, so you can ignore that as you don't have this system.

(1) New Original Honeywell Turbo, part: 0375L7, £1531.87
Exchange Honeywell Exchange Turbo, part: 0375T2, £831.96

Each carry a refundable surcharge from Peugeot of £140.00

The above are prices as of today from Peugeot direct, so you may be able to find another new or used one from a second hand or aftermarket supplier using the parts info above.

[Romtag]

Loved your response to the wet belt!

My previous mechanic never mentioned one, so I had assumed it didnt have one ... But just wanted to check with the FCF oracle!

Holy smokes £1500 quid. Good god!

After a quick Google I found these https://turbodiesel.cc/shop/turbocharge ... r-760-220/ - would that match?

[GiveMeABreak]

Never heard of them and the last turbo they sold was back in 2021..... and I wouldn't use a 'company' that only provides a mobile telephone number for business...

A few more here to consider:
https://turbo-diesel.co.uk/product/turb ... n-garrett/
https://www.autodoc.co.uk/car-parts/oem ... dw=1&gad=1

[Romtag]

So found a local garage that has refurbished the turbo, but the car will now not start at all, it literally runs for about 10-25 seconds and then just dies.

He has sent me some fault codes this morning to ask if I have seen them as I shared the two I had previously with the engine.

I've not heard of these codes before and I'm now concerned that I may be £1000 out of pocket with a useless car.

Is anyone able to give any insight as to what cause cause the issue, or any further (useful checks that could be done).

Mechanic

Mechanic

Mechanic

Thank

[GiveMeABreak]

I'll leave the TPMS fault codes for now as they won't affect the engine starting. According to the codes your air flow meter is shot though and you have an under-voltage situation. A weak battery can cause issues if there is insufficient voltage (see the last fault code below. So I would focus on these issues first.

Fault Code:	P0113
Description of Fault:	Inlet air temperature sensor signal fault : Open circuit or short circuit to the plus. The voltage of the signal for air temperature at the flowmeter is higher than 4, 8 V for 5 s.
Conditions for Fault to clear:	Ignition on
Downgrade Modes whilst Fault is active:	Cutting of the diagnosis of plausibility of the flowmeter
Symptoms:	Engine hesitating, cutting out Lack of power
Suspect Areas:	Air temperature sensor on the flowmeter Electrical harness Connector Engine ECU

Fault Code:	P0102
Description of Fault:	Flowmeter signal: Measured flow less than the minimum flow. The signal issued from the sensor is outside the electrical tolerance (Frequency too high). Conditions of activation of the diagnostics: Battery voltage more than 7,45 V.
Conditions for Fault to clear:	Ignition on
Downgrade Modes whilst Fault is active:	The engine ECU no longer regulates the EGR valve
Symptoms:	Lack of power
Suspect Areas:	Air flow meter Electrical harness

Fault Code:	P0562
Description of Fault:	Battery voltage signal: Battery voltage too low. Battery voltage less than 6 V (For at least 5 seconds).
Conditions for Fault to clear:	Ignition on
Downgrade Modes whilst Fault is active:	Cutting off the additional heating Irreversible cutting-off of vehicle cruise control Deactivation of the speed limiter
Symptoms:	Starting problem Jerking/stalling
Suspect Areas:	Battery Terminals Electrical harness Connector Alternator

[GiveMeABreak]

Thanks Marc, Hopefully this may help him diagnose, he has said getting the car is a nightmare to work on as no space where the turbo is. Hopefully he can work some magic..

Really appreciate your help today!

[Romtag]

What do you think Marc... I think it's a bit dirty... New one on the way.

Air intake sensor

[GiveMeABreak]

That it totally shot and I suspect not even a clean up will resolve that. This will undoubtedly affect the readings being sent to the ECU and will fuelling with the ECU using default values I suspect. I'd be checking the state of the air filter (make sure you are using a stock air filter) and make sure you clean up the throttle assembly too.

[Romtag]

Yep, the mechanic is having a whale of a time with it all today.

Really useful info re throttle so will relay that to him too