Diagnostics codes assistance- thp 1.6 156bhp

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508c5
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Diagnostics codes assistance- thp 1.6 156bhp

Unread post by 508c5 »

Hi,

I scanned a Peugeot 5008, THP 1.6, 156bhp with my Launch device (had no access to Diagbox) and came up with results seen on the picture - i have looked it up online but found little to none info - can anyone pls. Shed some light? Especially on the first 2 ones ?
16441451766746134431585644456969.jpg
16441449995522508313930059137743.jpg
P0A1A - signal from the piloted alternator (bss line)- incorrect value received - i have no idea !!🙄

P0945- Oil pressure Regulation Solenoid valve control . Open circuit - is it the VVT ...?

Thx
Last edited by myglaren on 06 Feb 2022, 11:54, edited 1 time in total.
Reason: Images rotated
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GiveMeABreak
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Re: Diagnostics codes assistance- thp 1.6 156bhp

Unread post by GiveMeABreak »

You haven't included the fifth code. You really need ALL these as the faults can present 'knock-on' faults as a result of other faults.

These are the descriptors for the 4 you have provided:

Fault Code: P0A1A
Description of Fault: Signal from the piloted alternator (BSS line): Value received incorrect. The following conditions have to be met:
- Engine management ECU in main triggering phase
- Communication with alternator valid

Possibility 1
Detection of a loss of communication on the line BSS (No synchronisation on the line) : The time of appearance of the fault code is 0,05s
Possibility 2
The communication manager BSS is in timeout: The time of appearance of the fault code is 0,05s
Conditions for Fault to clear: Communication with the piloted alternator in conformity : For at least 0,05 s
Downgrade Modes whilst Fault is active:
Symptoms: Unstable idling, Idle speed too high
Suspect Areas: Electrical harness, Alternator

Fault Code: P0945
Description of Fault: Oil pressure regulation solenoid valve control : Open circuit. Detection of an open circuit on the control of the oil pump pressure regulation electrovalve.

The following conditions have to be met
- Engine management ECU in main triggering phase
- Battery voltage between 9 and 17,9 V
- engine running
- Power relay jammed for more than 2 seconds
Conditions for Fault to clear: Absence of the fault codes P0945, P0947, P0948 for 1 s
Downgrade Modes whilst Fault is active: Change to "mechanical mode" on the piloted oil pump
Symptoms: -
Suspect Areas:
  • Electrical harness
  • Oil pressure regulation solenoid valve
  • Oil pump
  • Engine ECU

Fault Code: U0140
Description of Fault: CAN network : Communication fault with the BSI ECU. No communication with the BSI (CAN network disconnected; Short-circuit on the CAN High/CAN Low line; Loss of information on the CAN network)

The following conditions have to be met
- Engine management ECU in main triggering phase
- Engine running for 2,5 s
Conditions for Fault to clear: The fault disappears after a certain number of consecutive datastreams received without any fault
Downgrade Modes whilst Fault is active: Deactivation of the air conditioning
"reverse gear" information from the BSI not taken into account
Deactivation of the vehicle cruise control and speed limiter
Information "brake uncertain" sent on the CAN network
Deactivation of the "pedal jammed" diagnostics
Deactivation of the additional heating element
Activation of the catalytic converter heating no longer dependent on the engine stopping time
Activation of downstream sensor heating diagnostics no longer dependent on the engine stopping time
Activation of upstream sensor heating diagnostics no longer dependent on the engine stopping time
Mixture adaptation and combustion mode modified
Starting impossible
Alternator always activated on starting
Temperature of the alternator no longer dependent on the engine stopping time
No use of the fuel level as a model for fuel temperature
Deactivation of diagnostics of the plausibility of the maximum/minimum petrol level
Symptoms: Unstable idling, Lack of power, Engine hesitation, Excessive fuel consumption, Activation of the vehicle cruise control impossible, Down-graded cabin heating
Suspect Areas:
  • Electrical harness
  • Engine management ECU
  • Built-in systems interface

Fault Code: P0016
Description of Fault: Synchronisation : Lack of coherence between the engine speed sensor information and the inlet camshaft sensor information. Dephasing too great between the inlet camshaft and the crankshaft.

The following conditions have to be met
- engine running
- Inlet camshaft in the reference position
- Synchronisation done
- No error on the inlet camshaft signal
Conditions for Fault to clear: After several engine rev cycles without any error in the dephasing between the inlet camshaft and the crankshaft
Downgrade Modes whilst Fault is active:
  • Blocking of the ignition/fuel injection in the synchronisation checking phase (After engine restart)
  • Prohibiting of adaptation and control of the inlet camshaft
Symptoms: Starting difficult, Emissions outside the norms
Suspect Areas:
  • Inlet cylinder reference sensor
  • Inlet variable timing electrovalve
  • Dephaser
  • Setting the timing
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508c5
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Re: Diagnostics codes assistance- thp 1.6 156bhp

Unread post by 508c5 »

Wow , thx a lot marc - Fifth one was p2297 which i think i figured out - a loose turbo vacuum line (the thin one on the right side of the main "fat" pipe, the one with the "smart" clip on)

On another note - 3008 1.6 thp 163bhp - oil in coolant (didn't notice coolant in oil)- how likely would you say it is the oil cooler ? Better this than a blown head gasket which i guess is much less likely...thx.!!
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xantia_v6
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Re: Diagnostics codes assistance- thp 1.6 156bhp

Unread post by xantia_v6 »

508c5 wrote: 06 Feb 2022, 13:20 On another note - 3008 1.6 thp 163bhp - oil in coolant (didn't notice coolant in oil)- how likely would you say it is the oil cooler ? Better this than a blown head gasket which i guess is much less likely...thx.!!
It could just be the gasket between the sandwich plate and the oil cooler or the gasket between the sandwich plate and the block.
508c5
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Re: Diagnostics codes assistance- thp 1.6 156bhp

Unread post by 508c5 »

Thx, Not sure a stand alone gasket is available, i guess that if i am taking it off, replacing it would be a good idea. Or , maybe i just didn't manage to find the right drawings yet (to extract the gaskets oe part numbers)
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GiveMeABreak
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Re: Diagnostics codes assistance- thp 1.6 156bhp

Unread post by GiveMeABreak »

Here is the water gasket for the oil cooler item (3) (77,5 X 81) Part: 227110. If any of the other gaskets, let me know the item numbers and I'll get you the part Nos.
AM6 Gasket.JPG
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508c5
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Re: Diagnostics codes assistance- thp 1.6 156bhp

Unread post by 508c5 »

Thanks Marc, however, this is the transmission oil cooler not the engine oil cooler (if i am not mistaken). I believe the coolant suffers from engine oil leakage
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GiveMeABreak
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Re: Diagnostics codes assistance- thp 1.6 156bhp

Unread post by GiveMeABreak »

Sorry, yes, I assumed transmission cooler.
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Re: Diagnostics codes assistance- thp 1.6 156bhp

Unread post by xantia_v6 »

It is this one that can let oil into the cooling system I think:

Image

If going in there (which requires removal of the catalytic converter :( you should also replace the turbo oil feed line, preferably with an after=market part with proper crimped connectors.
508c5
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Re: Diagnostics codes assistance- thp 1.6 156bhp

Unread post by 508c5 »

https://cars245.com/en/item/meat-doria- ... ngine-oil/

I was thinking maybe only this part needs replacing..?
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Re: Diagnostics codes assistance- thp 1.6 156bhp

Unread post by GiveMeABreak »

Ok, so the oil filter cartridge bracket seals (B), which as suspected are only sold by PSA as part of the whole assembly (1)
cartridge.JPG
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508c5
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Re: Diagnostics codes assistance- thp 1.6 156bhp

Unread post by 508c5 »

Thx, So you recommend changing the entire housing (filter housing included) and not just the cooler itself (like the one i attached in the link) ?

Would it really involve removal of the cat as well??🤦

Thx
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Re: Diagnostics codes assistance- thp 1.6 156bhp

Unread post by GiveMeABreak »

Xantia_v6 will be able to advise on this, but I was just confirming that PSA don't sell the separate seal. As you've found out though, you can get just this part from aftermarket sellers - just make sure it's of decent quality.
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508c5
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Re: Diagnostics codes assistance- thp 1.6 156bhp

Unread post by 508c5 »

Thx, so far i can only find the cooler (50-60$ for NRF or Meat and Doria) , the housing is available only from PSA or CN (AliExpress..)
508c5
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Re: Diagnostics codes assistance- thp 1.6 156bhp

Unread post by 508c5 »

xantia_v6 wrote: 07 Feb 2022, 05:10 It is this one that can let oil into the cooling system I think:

Image

If going in there (which requires removal of the catalytic converter :( you should also replace the turbo oil feed line, preferably with an after=market part with proper crimped connectors.
Is it really necessary to replace the entire housing ? Replacement of the cooler itself won't suffice?

Thx