Fault p2453/p2454 says dpf pressure sensor witch sensor is it

The P0208 code on your 2012 Mercedes Sprinter is likely a false positive. This code indicates an injector circuit malfunction on cylinder 8, but your Sprinter only has 6 cylinders. The most likely cause of this code is a problem with the wiring harness or connection to the injector. To clear the P0208 code, you can try the following: Inspect the wiring harness for any damage or loose connections. Clean the injector connector with electrical contact cleaner. Reinstall the injector and clear the code with your scan tool. If the code persists after these steps, you may need to replace the injector or wiring harness. The P2453 code is an error in the DPF sensor. This code can be cleared by performing a regeneration of the DPF. You can do this by driving the vehicle at a steady speed of 50-60 mph for 20-30 minutes. If the P2453 code persists after performing a regeneration, you may need to replace the DPF sensor. It is important to note that these are just some general troubleshooting steps. The specific cause of your codes may vary. If you are unable to clear the codes yourself, it is best to take your vehicle to a qualified mechanic for diagnosis.

Try an oil and filter change. The 2 litre CDTi's are known for oil flow and oil pressure issues especially higher mileage models. The lack of oil flow can make the engine struggle.

This DTC says nothing about changing the sensor or the connector or pig tail ! It's a circuit voltage low code
P0405 - DPF EGR Sensor Circuit Low Voltage Detected See DTC P1400 Problem with wiring or PCM !
P1400 - DPF EGR Sensor Circuit Low Voltage Detected The EGR monitor checks the DPF EGR sensor signal to the PCM for low voltage. The test fails when the average voltage to the PCM drops to a voltage less than the minimum calibrated value.

• DPFEGR circuit short to GND
• Damaged DPF EGR sensor
• VREF short to GND
• Damaged PCM

A DPF EGR PID reading less than 0.2 volt with the key ON and engine OFF or running, indicates a hard fault.

I don't know much about the diesel particulate filter system yet other than what I have read.

All the articles on the subject I have seen so far indicate the trigger for starting the automatic DPF cleaning cycle is excessive exhaust back-pressure. When the pressure sensor in the exhaust detects excessive pressure the engine management values are changed to make the exhaust very hot and a special solvent from an on-board reservoir is forced into the system and the cleaning process of the DPF is underway.

The articles suggest topping up the reservoir of special solvent is a routine service item. Anecdotal evidence suggest neither the cleaning process or the topping up are automatic or routine but rather another way for dealers to rip-off customers.

When the cleaning process no longer restores minimal back-pressure the DPF must then be replaced at what anecdotal evidence is a very high cost.
I could be wrong but I suspect before the engine management system recognises excessive back-pressure to be a problem and record it as a fault it would have to record a certain number of instances in a certain time-frame and if that criteria isn't being met there will be no faults stored.
Certainly this is a case for an obd recorder to be fitted to your car to record the live data which can be analysed by the dealer later.

I speculate the pressure sensor, wiring or connectors might be faulty or inaccurate or you really do have a back-pressure problem, either because the DPF they fitted is faulty or of poor quality, the work is of poor quality or because there is something wrong with the rest of the exhaust system.

Personally, because I have experienced back-pressure problems increasing during a journey being caused by exhaust silencer boxes I would start by removing everything rear of the DPF and give each part a shake and compare the weight with a new one of the same type.
Just my opinion you understand.

I would need to refer to a wiring diagram and an overview of the engine management system to form an opinion whether the exterior temperature indicator is a coincidence or is linked.

Good luck!

• Kfzeeprom Eeprom

To

• [email protected]

Hi
I got this problem in Skoda Diesel Particle Filter, I have check the wiring all is perfect , then I have change it but the same problem .
will anybody tell me how can I solve this problem please ,
PS. after deleting the fault it came back

Regards

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Saturday,06,July,2013,17:18:03:25282
VCDS -- Windows Based VAG/VAS Emulator
VCDS Version: 12.10.6.2
Data version: 20130531

Dealer/Shop Name: EEPROMKFZEEPROM WORKSHOP .

.
Workshop Code: 123 12345 023456

VIN: TMBHT61Z5A2101325 License Plate: PROBLEM

----------------------------------------------------------
----------------------------------------------------------

Chassis Type: 1K0
Scan: 01 03 08 09 10 15 16 17 19 25 42 44 46 52 56 62 69 72 77

VIN: TMBHT61Z5A2101325

01-Engine -- Status: Malfunction 0010
03-ABS Brakes -- Status: Malfunction 0010
04-Steering Angle -- Status: OK 0000
08-Auto HVAC -- Status: Malfunction 0010
09-Cent. Elect. -- Status: Malfunction 0010
10-Park/Steer Assist -- Status: Malfunction 0010
15-Airbags -- Status: OK 0000
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: Malfunction 1010
19-CAN Gateway -- Status: Malfunction 0010
25-Immobilizer -- Status: Sporadic communication error 1000
42-Door Elect, Driver -- Status: Malfunction 0010
44-Steering Assist -- Status: Malfunction 0010
46-Central Conv. -- Status: OK 0000
52-Door Elect, Pass. -- Status: Malfunction 0010
56-Radio -- Status: Malfunction 0010
62-Door, Rear Left -- Status: OK 0000
69-Trailer -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000
77-Telephone -- Status: Malfunction 0010

----------------------------------------------------------
Address 01: Engine (J623-CAYC) Labels: 03L-906-023-CAY.clb
Part No SW: 03L 906 023 AG HW: 03L 906 023 AG
Component: 1,6l R4 CR td H23 5697
Revision: -------- Serial number:
Coding: 00114016032400080000
Shop #: WSC 73430 031 00999
ASAM Dataset: EV_ECM16TDI02103L906023AG 001003
ROD: EV_ECM16TDI02103L906023A.rod
VCID: 6BDFA3EE82E73246487

1 Fault Found:

7397 - Diesel Particle Filter; Differential Pressure Sensor
P2454 00 [175] - Short to GND
MIL ON - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 2
Mileage: 166872 km
Date: 2038.14.06
Time: 00:13:34

Readiness: 0000 0000

End ----------------------------------------------------------

OBD2 fault codes have no cut and dry fix for every car that has it in memory. Here is the general info on the code. This code refers to the EGR valve back pressure sensor called the "DPFE" sensor
P1401 - DPFE Circuit High Input
Symptoms - Engine Light ON (or Service Engine Soon Warning Light) Possible causes

DPF EGR circuit open.

VREF short to PWR.

Damaged DPF EGR sensor.

DPFEGR circuit short to PWR.

SIG RTN circuit open.

Damaged PCM.

Possible solution A DPF EGR PID reading greater than 4.5 volts with the key ON and engine OFF or running indicates a hard fault.

2453 is theor paticulate soot filter and 244 is just the restricted performace differential pressure sensor, needs to b e serviced for sure...

Hi,

This error is due to bad DPFE (delta pressure feedback) sensor. This sensor is located on the passenger side of the engine compartment.

Once replaced, would fix the issue.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

P0401 insufficient EGR flow.

Possible causes:

• Fault in vacuum supply to EGR vacuum regulator solenoid.
• EGR valve stuck closed or iced.
• EGR valve diaphragm leaks.
• EGR valve or flow path restricted.
• EGR vacuum hose off, plugged or leaks.
• VPWR circuit open to EGR Vacuum Regulator solenoid.
• EVR circuit to PCM open.
• EVR circuit to PCM shorted to PWR.
• Differential Pressure Feedback EGR (D.P.F. EGR) sensor pressure hoses both connected improperly.
• D.P.F. EGR sensor pressure hoses reversed.
• D.P.F. EGR sensor VREF circuit open.
• Downstream pressure hose off.
• Downstream pressure hose plugged.
• Damaged orifice tube assembly.
• Damaged EGR Vacuum Regulator solenoid.
• Damaged D.P.F. EGR sensor.
• Damaged PCM.

P0443 indicates an intermittent EVAP canister purge valve circuit failure.
Possible causes:

• Intermittent EVAP canister purge valve or VPWR circuit open.
• Damaged EVAP canister purge valve.