2010 5008 fault codes

[stern413]

Hello,

My 2010 Peugeot 5008 1.6 156 has a couple fault codes. Could I get descriptors on these codes?

BSI: F303
Gearbox: U1208
Engine: P15A6 P15A0 P2262 P0299 P0087 P0172 P0945 P0262 P1337

All of these fault codes appear after having cleared all the fault codes a couple days earlier in Diagbox. The last two engine fault codes about injector fault and misfire were with a cold engine and caused the engine to go into limp mode. Switching the car off and then on again seemed to fix this... Anyway, the other fault codes about oil and fuel occur without any pattern. They occur with both a cold or warm engine as stated in the associated variables. The turbo fault code happens whenever the throttle is fully down for longer than roughly ten seconds. The only real problem I am experiencing is lack of power due to no boost from the turbo as measured by Diagbox. I need to look into this further another time with someone that has more engine knowledge than me.

I will gladly provide more informations and screenshots of Diagbox if wanted.

Many thanks in advance

[GiveMeABreak]

Please provide your VIN (please post your VIN in full without spaces - it will be automatically masked from public view after submitting your post & will only be visible to staff), so I can relate the faults directly to the specific engine ECU.

[stern413]

The VIN is VF3**************[VIN obfuscated, can be read by forum staff]

Do you also require OPR code or is VIN sufficient?

[GiveMeABreak]

No that's all I need, I can get everything from this including RPO. Leave it with me as you have a few there....

[GiveMeABreak]

Note, there's an outstanding after sales campaign due on this vehicle. I'd suggest you call your nearest Peugeot dealer and quote your registration - they'll be able to tell you what the work involves, but it may or may not be related to your issues. Only they can tell you what's involved, but it will be free and no cost to you, so don't wait about.

I'll get the codes in a short while.

[GiveMeABreak]

I hope you're sitting down with a coffee. This has to be one of the longest posts I've done.

F303 is a 'Secured Configuration Fault' - Not specifed. It means there is either a configuration error or there is a problem writing data to the ECU. Have you attempted to change some settings using Diagbox?

Fault Code:	U1208
Description of Fault:	Fault in the information sent by the engine management ECU over the CAN network: Value received incorrect. Possibility 1 - Detection of an uncertain engine torque - The time of appearance of the fault code is immediate Possibility 2 - Detection of an invalid accelerator pedal position - The time of appearance of the fault code is immediate Context of appearance of the fault code: Engine running. Technical precision on the context of appearance of the fault code: The following conditions have to be met: - Engine running - Absence of fault codes : U1003 - U1108 - U1208 - Battery voltage between 10,2 and 15,5 V
Conditions for Fault to clear:	-
Downgrade Modes whilst Fault is active:	Gear locked. The engine torque value is equal to the maximum torque.
Switching on of the warning lamp and/or warning message (*):	Possibility 1 Warning lamp MIL Possibility 2 - "SERVICE" warning lamp - Sport warning lamp - Snow warning lamp - Automatic or 6-speed piloted manual gearbox warning lamps (Orange PRND triangle) - Display of a "-" on the fascia panel - Warning lamp MIL
Symptoms:	Possibility 1 - Possibility 2 - Lack of power - Engine hesitating, cutting out - Deactivation of the speed limiter - Deactivation of the cruise control - Difficult/impossible to change gear
Suspect Areas:	Engine management ECU

Fault Code:	P15A6 (Engine ECU BOSCH MED 17.4 branch 1)
Description of Fault:	Oil pressure regulation fault: Pressure too high in relation to the reference value. Oil pressure too high in piloted automatic mode. The following conditions have to be met: - engine running - Battery voltage correct - Oil temperature correct
Conditions for Fault to clear:	Confirmation of return to automatic mode on the piloted oil pump.
Downgrade Modes whilst Fault is active:	Change to "mechanical mode" on the piloted oil pump
Symptoms:	Excessive fuel consumption.
Suspect Areas:	Oil pressure sensor Oil pump regulation electrovalve Engine ECU

Fault Code:	P15A6 (Engine ECU BOSCH MED 17.4.2 branch 2)
Description of Fault:	Lubrication system: Oil pressure too high in regulated mode. Oil pressure too high in regulated mode. The following conditions have to be met: - engine running - Battery voltage correct - Oil temperature correct
Conditions for Fault to clear:	Confirmation of the return to automatic mode of the oil pressure regulation.
Downgrade Modes whilst Fault is active:	Switching of the piloted automatic oil pump to "mechanical mode"
Symptoms:	Excessive fuel consumption
Suspect Areas:	Electrical harness Oil pump regulation electrovalve

Fault Code:	P15A0 (Engine ECU BOSCH MED 17.4 branch 1)
Description of Fault:	Oil pressure regulation fault : Pressure too high (Regulation permanently on upper threshold). Possibility 1: Change of the oil pump from controlled mode to mechanical mode while the pressure is too high Possibility 2: Oil pressure too high Possibility 3: The pressure is too high in relation to the engine speed The following conditions have to be met - engine running - Battery voltage correct
Conditions for Fault to clear:	Confirmation of return to automatic mode on the piloted oil pump.
Downgrade Modes whilst Fault is active:	Change to "mechanical mode" on the piloted oil pump.
Symptoms:	Excessive fuel consumption
Suspect Areas:	Oil pressure sensor Oil pump Oil pump regulation electrovalve

Fault Code:	P15A0 (Engine ECU BOSCH MED 17.4.2 branch 2)
Description of Fault:	Lubrication system: Oil pressure too high in mechanical mode. Possibility 1: Change of the oil pump from controlled mode to mechanical mode while the pressure is too high Possibility 2: Oil pressure too high Possibility 3: The pressure is too high in relation to the engine speed. The following conditions have to be met: - engine running - Battery voltage correct
Conditions for Fault to clear:	Confirmation of return to automatic mode on the piloted oil pump.
Downgrade Modes whilst Fault is active:	Change to "mechanical mode" on the piloted oil pump
Symptoms:	Excessive fuel consumption
Suspect Areas:	Fluid level Electrical harness Oil pump regulation electrovalve Oil pressure sensor Oil pump

Fault Code:	P2262 (Engine ECU BOSCH MED 17.4 branch 1)
Description of Fault:	Turbocharging pressure regulation fault: Turbo pressure too low. - Turbo pressure too low: Turbocharger discharge electrovalve jammed open - The inlet pressure is outside the tolerance The following conditions have to be met: - Engine management ECU in main triggering phase - Turbocharger regulation activated - Engine speed above 2520 rpm - Turbo reference pressure higher than 1,4 bars - Atmospheric pressure higher than 0,8 bars - Effective turbo pressure difference less than 0,1 bars - Turbo pressure valid - No power step error
Conditions for Fault to clear:	Clearing possible in the same driving cycle, provided the turbo pressure remains above 1,6 bars for more than 2 s.
Downgrade Modes whilst Fault is active:	-
Symptoms:	Lack of power
Suspect Areas:	Turbocharger pressure regulation electrovalve

Fault Code:	P2262 (ECU BOSCH MED 17.4.2 branch 2)
Description of Fault:	Turbocharging circuit: Turbocharging regulation valve suspected jammed open. Turbo pressure too low: Turbocharger pressure regulation solenoid valve forced wide open Conditions of activation of the diagnostics: The following conditions have to be met: - Engine management ECU in main triggering phase - Turbocharger regulation activated - Engine speed above 2520 rpm - Turbo reference pressure higher than 1,4 bars - Atmospheric pressure higher than 0,8 bars - Effective turbo pressure difference less than 0,1 bars - Turbo pressure valid - No power step error
Conditions for Fault to clear:	Clearing possible in the same driving cycle, provided the turbo pressure remains above 1,6 bars for more than 2 s.
Downgrade Modes whilst Fault is active:	-
Symptoms:	Lack of power
Suspect Areas:	Air cleaner Air inlet line Turbocharger boost sensor Vacuum pump Vacuum circuit Turbocharger pressure regulation electrovalve Turbocharger pressure regulation capsule

Fault Code:	P0299
Description of Fault:	Turbocharging circuit: Pressure too low. Turbo pressure too low: Turbo regulation at the minimum limit. The difference between the reference turbo pressure and the actual pressure falls below the threshold of -0,1 bars or -0,12 bars if there is an error in the camshaft dephasing system. No confirmation time. Conditions of activation of the diagnostics: The following conditions have to be met: - Engine management ECU in main triggering phase - Turbo regulation active - Atmospheric pressure higher than 0,8 bars - Engine speed above a threshold dependent on atmospheric pressure - Turbo pressure valid - No power step error
Conditions for Fault to clear:	The following conditions have to be met - Must be within 8 s after the appearance of the fault (Deactivation of the turbo regulation 8 s after the appearance of the fault). - After engine restart (If the difference between the reference turbo pressure and the actual pressure exceeds the threshold of - 0,1 bars or - 0,12 bars if there is an error in the camshaft dephasing system)
Downgrade Modes whilst Fault is active:	Deactivation of the turbocharger regulation (Electrovalve forced wide open) No authorisation of checking of the power stage of the dump valve Reduction of load applied to revert to the behaviour of a naturally-aspirated engine (The maximum load is limited by the mapping : 110 % to 2000 rpm ; 40 % to 6500 rpm)
Symptoms:	Lack of power
Suspect Areas:	Turbocharger pressure regulation electrovalve Turbocharger discharge electrovalve Vacuum pump Air cleaner Air inlet line Turbocharger boost sensor Vacuum circuit Turbocharger pressure regulation capsule

Fault Code:	P0087
Description of Fault:	Fuel circuit : The pressure measured in the injection rail is less than the setting. Pressure in the fuel high pressure common injection rail lower than the pressure setting for a certain time (Less than 25 bars). Conditions of activation of the diagnostics: The following conditions have to be met: - Engine management ECU in main triggering phase - High pressure regulation active - The fuel flow is between 5 and 180 % - No adaptation of the high pressure pump in progress
Conditions for Fault to clear:	The following conditions have to be met: - Each time that the difference between the actual pressure in the fuel high pressure common injection rail and the setting is less than 25 bars for more than 2 s, the counter is decremented. If the counter is lower than 2, the first part of the conditions for clearing is validated. - Each time that the difference between the actual pressure in the fuel high pressure common injection rail and the setting is greater than 25 bars for more than 2 s, the counter is decremented. If the counter is lower than 3, the second part of the conditions for clearing is validated.
Downgrade Modes whilst Fault is active:	Deactivation of the bringing to temperature of the catalytic converter. Engine operating with fuel pressure of 5 bars Limitation of the engine load
Symptoms:	Lack of power
Suspect Areas:	High pressure fuel pump Low pressure fuel circuit

Fault Code:	P0172
Description of Fault:	Mixture regulation: Mixture too rich. Mixture regulation and leanness limit: System too rich. Mixture regulation reaches the minimum value 0,72 (For 280 seconds). Conditions of activation of the diagnostics: The following conditions have to be met: - Engine management ECU in main triggering phase - Mixture regulation upstream of the catalytic converter activated
Conditions for Fault to clear:	Mixture regulation above the minimum value 0,72
Downgrade Modes whilst Fault is active:	-
Symptoms:	Unstable idling Emissions outside the norms Flat spot on acceleration Stalling at idle Lack of power
Suspect Areas:	Inlet manifold Upstream oxygen sensor Purge canister solenoid valve Fuel injectors Air cleaner Electrical harness Setting the timing Water temperature sensor / Coolant outlet housing Engine ECU Atmospheric pressure sensor Turbocharger boost sensor Intake manifold pressure sensor Crankcase breather system High pressure fuel pump Exhaust system Engine compressions

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. Conditions of activation of the diagnostics: 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:	P0262
Description of Fault:	Injector 1 control: Short-circuit to the battery plus. Description of the diagnostics: Possibility 1 - Short circuit to battery positive on the control line of injector 1 Possibility 2 - Short circuit to battery positive on the earth line of injector 1 Possibility 3 - Injector 1 mechanically jammed open, the number of misfirings on cylinder 1 has exceeded a threshold with a rail pressure too low relative to the setting ; No confirmation time Possibility 4 - Short circuit to battery positive on the control line of injector 4 Possibility 5 - Short circuit to battery positive on the earth line of injector 4 Possibility 6 - Injector 4 mechanically jammed open, the number of misfirings on cylinder 4 has exceeded a threshold with a rail pressure too low relative to the setting; No confirmation time/ If an error is seen simultaneously on cylinders 1 and 4, the fault P0262 is cancelled because an electrical problem is assumed based on the fact that the 2 cylinders belong to the same bank in terms of the electrical structure. Conditions of activation of the diagnostics: The following conditions have to be met: - Engine management ECU in main triggering phase - Battery voltage between 8 and 15 V - Engine speed above 80 rpm - Combustion misfiring detection activated - The crankshaft has made 3 revolutions
Conditions for Fault to clear:	Disappearance of the short-circuit after a timing of 0,5 s. No more misfiring
Downgrade Modes whilst Fault is active:	Cutting of injection on cylinder N°1. Deactivation of the whole of the mixture regulation of the oxygen sensors CAN network: "estimated engine torques uncertain" information present ; Invalid value for the information "idle regulation reference value". Detection of misfiring on the cylinders deactivated for knock protection - If at least one cylinder is cut, contributes to invalidating the CAN information "actual torque" - If at least 2 cylinders are cut, sending of invalid values for the information "actual torque", "engine losses torque", "torque requested by the driver before processing", "torque requested by the driver after processing" and "anticipated torque after processing". Stopping of the current fuel consumption calculation (Reset) Deactivation of the canister purge function Deactivation of the exhaust gas temperature regulation in closed loop
Symptoms:	Starting impossible Starting difficult Unstable idling Lack of power Engine hesitation
Suspect Areas:	Fuel injector 1 Fuel injector 4 Electrical harness Engine ECU

Fault Code:	P1337
Description of Fault:	Combustion misfiring (impact on catalytic converter): No. 1 cylinder. Ignition misfiring (Possibility of damage to the catalytic converter). Conditions of activation of the diagnostics: The following conditions have to be met: - Engine management ECU in main triggering phase - Engine speed above 500 rpm and below a threshold defined in the engine ECU - Torque less than a threshold defined in the engine ECU - The crankshaft and the camshaft are synchronised
Conditions for Fault to clear:	Stop the engine and restart, in order to re-inject into the cylinders cut off following the detection of ignition misfirings.
Downgrade Modes whilst Fault is active:	Deactivation of the richness regulation Deactivation of the canister purge function Cutting of cylinders if fault persistent Deactivation of checking of the canister purge
Symptoms:	Starting impossible Starting difficult Unstable idling Idle speed too high Lack of power Engine hesitation Emissions outside the norms Excessive fuel consumption
Suspect Areas:	Electrical harness Sparking plugs Ignition coil Fuel injector Engine ECU Engine compressions

[stern413]

Yeah sorry about the quantity of fault codes. If the car didn't have any, it probably would have been kept by the previous owner. Thank you though for still looking up each code.

When the vehicle was bought, the F303 code was already present (same goes for all other codes). Could F303 be related with U1208? Maybe an incorrect setting in the engine ECU causing an error in the gearbox?
For the turbo and oil related faults, would replacing or at least checking the electrovalves be a good step to try and fix the issues? Are these electrovalves a common point of failure on the 1.6 engines?
The other engine faults I will take a look at later since they are a bit more difficult to consistently reproduce.

Thanks for heads up about the outstanding after sales campaign, I will contact a dealer to see if there are any outstanding campaigns that are yet to be done.

I will update this topic whenever I have time to look at the car.

[stern413]

Well here's an update.

A week ago, the car started complaining about low oil pressure. Topped of the oil and still got the warning. Of course I started up Diagbox and the program literally froze for a good minute while checking the engine ECU: 17 faults, probably a world record. So in addition to the fault codes I already posted previously, I have collected the following: P0271, P0948, P0304, P1336, P1339, P0016, P0171, P15A9, P15A7. Weird that I am getting both P0171 and P0172. How can the engine have a lean and a rich mixture at the same time?

On another note, I tried to check the turbo wastegate valve using Diagbox's built-in functions but did not actually see the valve moving although I did hear clicking noises like I should according to Diagbox. When manually moving the valve, it felt fine. It was clearly still attached to something and not hanging loose. I didn't have enough time to disassemble anything so I couldn't see if a nut fell off like on other cars with low boost issues.

As for the next step, I am going to take it to a garage. If they miraculously managed to fix the engine, I will post another update here.