Esp fault 3008

[Jonesy1704]

So my 2011 1.6 hdi Peugeot 3008 had a diesel smell coming into car when driving. On inspection seen a large build up of carbon around the injectors so figured there could be one leaking, also noticed a leak from the egr where it bolts onto to back of the cylinder head. So took off the egr valve and found a missing gasket, replaced that and cleaned the injectors up and replaced all washers and seals. Job seems a good one, however on test drive the orange esp light and orange electric handbrake light are on the dash and vehicle is in limp mode. Switch off and restart all goes out and vehicle drives good for few moments and again. Same faults. Ran diagnostic and got the following codes, U1208 and c1391. Can anyone help. What have I done to cause this??

[GiveMeABreak]

It's possible you've dislodged / damaged / pulled / disconnected a wiring connector whilst undertaking the EGR work.

These all have CAN data networks throughout the engine bay to the sensors and equipment and therefore if you disrupt these it can nave a knock-on effect on the data communications with other systems.

The engine ECU relies on the information from the ESP system via the wheel speed sensors. As you have ESP issues, I'd be checking that there's no oil or contamination on any of the wiring connectors and trace your steps back where you were working to see if there is anything that has been disconnected or damaged wiring or connection wise. Make sure you haven't disconnected anything from the engine ECU and that all the connections are secure.

Fault Code:	C1391
Description of Fault:	Non-acknowledgement of the engine torque fault: Not characterised. The time for recording the fault code is 500 milliseconds. Absence of the frame coming from the engine management ECU.
Conditions for Fault to clear:	Presence of frames coming from the engine ECU
Downgrade Modes whilst Fault is active:	The stability control regulation (ESP) and the traction control function (ASR) end. Once it is finished, cutting of all ESP-ASR operations. The other sub-functions remain active Switching on of the warning lamp and/or warning message: ESP/ASR system warning lamp
Symptoms:	Lighting of the ABS and ESP warning lamps
Suspect Areas:	Faults in the engine management ECU Connectors CAN network

Fault Code:	U1208
Description of Fault:	No communication with the engine management ECU fault: Data invalid Description of the diagnostics: Possibility 1 - The time for recording the fault code is 500 milliseconds - The clutch pedal sensor values sent by the engine management ECU are not coherent with those of the ESP ECU Possibility 2 - The time for recording the fault code is 500 milliseconds - The datastreams from the engine management ECU are not valid Possibility 3 - The time for recording the fault code is 500 milliseconds - The accelerator pedal sensor values sent by the engine management ECU are not valid
Conditions for Fault to clear:	Possibility 1 - Clutch pedal sensor values sent by the engine ECU coherent with those of the ESP ECU Possibility 2 - The datastreams from the engine management ECU are valid Possibility 3 - The accelerator pedal sensor values sent by the engine management ECU are valid
Downgrade Modes whilst Fault is active:	Possibility 1 - The anti-lock braking system (ABS) function switches to down-grade mode - Immediate cutting of all the speed control functions (Electronic stability control (ESP)) Possibility 2 - The anti-lock braking system (ABS) function switches to down-grade mode - Immediate cutting of all the speed control functions (Electronic stability control (ESP)) - Hill start assistance function inactive - Switching of the electric parking brake to manual mode Possibility 3 - The regulation functions remain active - Hill start assistance function inactive - Switching of the electric parking brake to manual mode Switching on of the warning lamp and/or warning message Possibility 1 - Possibility 2 - Warning lamp ESP/ASR Possibility 3 - Warning lamp ESP/ASR - Electric parking brake automatic functions deactivation warning lamp - "SERVICE" warning lamp
Symptoms:	Lighting of the ABS and ESP warning lamps
Suspect Areas:	Connectors CAN network ESP ECU

[Jonesy1704]

Thank you Marc for your reply. I've tried double checking all the connections that I've worked near and all seems ok. To my understanding it would appear that the esp ECU isn't communicating with the main ECU. For what reason I don't know yet. The battery was very low when I went to start again after I rebuilt it the first time and I jump started it off another car. Is it possible I've damaged the esp module or even blown a fuse? Is there a way to test the esp module and is there a fuse for it or a wiring diagram? Where is the esp module on a 3008 MK1? Again I appreciate the help.

[GiveMeABreak]

You'll need to provide your VIN if you want a diagram as they are specific to each vehicle and options. 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.

[Jonesy1704]

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

[GiveMeABreak]

With the exception of the wiring codes, most of the component codes are indexed here:

PSA Electrical Diagrams - Wiring & Symbols Codes Index

I've put up the injection and the ESP diagrams, as according to the fault it seems more likely to be engine ECU related. As you have no codes for the wheel speed sensors, we can assume those are all working correctly. So as may CAN wiring / communication fault between the ESP ECU and the Engine ECU.


ESP ECU



Injection ECU

[Jonesy1704]

On inspection I'm considering the possibility it's the fuse box voltage module. Mines a Delphi 28236841. Is there details on how to test it properly? Thanks

[Jonesy1704]

Update. On test drive I've now got the following faults up. P1434 P1435 P12B3 and P0489. All permanent. FML

[GiveMeABreak]

Here's some help with the fault codes:

Fault Code:	P12B3
Description of Fault:	EGR valve: Position incorrect (too open) (Service). The position measured is less than the reference by more than 10 % for 5 seconds.
Conditions for Fault to clear:	Driving for 5 minutes remaining under an engine speed of 4000 rpm at half load
Downgrade Modes whilst Fault is active:	-
Symptoms:	Jerking/stalling Smoke from the exhaust Lack of power Noise Starting problem Problem with automatic restarting of the internal combustion engine (Vehicle equipped with "stop and start")
Suspect Areas:	Exhaust gas recycling valve Electrical harness Connectors

Fault Code:	P0489
Description of Fault:	EGR valve : Position incorrect (too open). The position measured is less than the reference by more than 15 % for 5 seconds.
Conditions for Fault to clear:	Driving for 5 minutes remaining under an engine speed of 4000 rpm at half load
Downgrade Modes whilst Fault is active:	Closing of the EGR (exhaust gas recycling) valve Irreversible deactivation of the vehicle speed limiter Irreversible deactivation of the vehicle cruise control Deactivation of taking account of the tight spot information Switching of the turbocharging pressure regulation to controlled mode Switching to fuel "normal reduced flow" mode Deactivation of the request for regeneration of the particle filter from the diagnostic tool Deactivation of the "easy-move" (electric parking brake) functionality Function for limitation of the static torque for the protection of the gearbox Switching on of the warning lamp and/or warning message: Warning lamp MIL "SERVICE" warning lamp
Symptoms:	Jerking/stalling Smoke from the exhaust Noise Lack of power Starting problem Problem with automatic restarting of the internal combustion engine (If the vehicle has the Stop and Start system)
Suspect Areas:	Exhaust gas recycling valve Electrical harness Connectors

Fault Code:	P1434
Description of Fault:	Multiplexed additive pump: Pump fault. Multiplexed additive pump fault detected for 10 seconds.
Conditions for Fault to clear:	The following conditions have to be met: - Addition of 10 litres of fuel - Driving with the engine hot for 5 minutes
Downgrade Modes whilst Fault is active:	Transmission to the multifunction screen of "risk of clogging of the particle filter" Switching on of the warning lamp and/or warning message: "SERVICE" warning lamp
Symptoms:	No effects immediately perceptible to the customer
Suspect Areas:	Soft pouch/Particle filter additive reservoir Additive pump TI Additive pump MGI LIN

Fault Code:	P1435
Description of Fault:	Multiplexed additive pump: CAN network fault or pump fault. Possibility 1 Multiplexed additive pump fault detected for 10 second Possibility 2 Fault in communication between the built-in systems interface and the additive pump detected for 10 second
Conditions for Fault to clear:	The following conditions have to be met: - Addition of 10 litres of fuel - Driving with the engine hot for 5 minutes
Downgrade Modes whilst Fault is active:	Transmission to the multifunction screen of "risk of clogging of the particle filter" Switching on of the warning lamp and/or warning message: "SERVICE" warning lamp
Symptoms:	Fluid leak/smells (diesel fuel, oil, etc.) No effects immediately perceptible to the customer
Suspect Areas:	Soft pouch/Particle filter additive reservoir Additive pump TI Additive pump MGI