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Peugeot Boxer 2.2 HDI - Error p15BE diagram or consultation needed

thesperado 58005 17
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How is the DPF fuel vaporizer/glow-plug circuit on a 2014 Peugeot Boxer 2.2 HDI wired, and where should I check for the P15BE fault?

The P15BE on this Boxer/Jumper setup points to the DPF fuel vaporizer/glow-plug circuit, which is fed by a 20A maxi fuse under the hood and a relay in the small extra box there; the burner/injector is located underneath, right in front of the DPF [#17763240][#18037250][#18037493] A common failure is the glow plug/vaporizer itself shorting to rust, which blows the nearby fuse; one user proved it by swapping the plug for a bulb and then replacing the whole element restored regeneration [#18039795][#20359477] If the fuse keeps failing or the circuit goes dead, inspect the harness under the fuse box for melted insulation, because damaged wiring can also cause P15BE and repeated fuse blowing [#21434941]
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  • #1 17754207
    thesperado
    Level 14  
    Posts: 86
    Help: 6
    Rate: 70
    The vehicle is as in the subject, 2014. I know that the problem may be in the cables, the spark plug in the fuel vapor valve, the relay, etc., so I'm digging around, but a bit in the dark because there is no diagram. The candle has a measured resistance of 1.2 Ω, so it turns out ok. In the harness I found a melted black wire going from the BSM plug to the spark plug plug. As I remember, there was over 12V on the yellow one, which also goes to the spark plug plug, after the ignition was turned on. Once I fix the harness, I'll check it again. There is no positive voltage reaching the relay's working contact legs.
    Does anyone have a diagram or can tell me how it works? Jumper has a similar solution, and Fords have the same solution.
    Is this candle in the DPF supposed to initiate filter burning by igniting soot with fuel vapors?
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  • #2 17763240
    przemas7
    Level 12  
    Posts: 10
    Rate: 17
    Check fuse no. 5, maxi 20A, in the fuse box.
  • #3 17764652
    thesperado
    Level 14  
    Posts: 86
    Help: 6
    Rate: 70
    It is functional and powered, the relay is also functional, I can control it from the diagnostic device. One working contact is connected to the wire going to the candle, but the second working contact is not powered, so there is no connection to the fuse, Damage to the cassette, or is there something else between the fuse and the relay? They often write about it as BSI or BSM, it detects disconnected components, so it is not an ordinary fuse and relay box. For example, the lack of a candle relay, i.e. the lack of a coil on the control contacts, generates the P15BB error.
  • #4 17938958
    tofii33
    Level 2  
    Posts: 2
    Rate: 6
    Did your friend deal with this problem? I have the same error. Today or tomorrow I will be replacing the fuse box under the hood. I'll let you know what the result will be.
  • #5 18012432
    slawarek
    Level 16  
    Posts: 480
    Rate: 209
    I also have error P15BE-73 P1490-92. Has anyone managed to find a diagram or a specific description? Did replacing the box help?
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  • #6 18036944
    Sylwek L.L
    Level 2  
    Posts: 4
    Rate: 2
    Has the above issue been resolved? because there is no answer, and I have the same problem in Citroen Jumper 2.2 from 2014. Namely, the DPF (particulate matter) light and error P15BE. I cannot locate the fuse and relay for this fuel metering system.
  • #7 18037250
    decybel91
    Level 43  
    Posts: 7987
    Help: 1020
    Rate: 4191
    Small additional box in the box under the hood, one red relay and one fuse. If it is OK, disassemble the dispenser and wash it very thoroughly. The fuel must flow freely through it.
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  • #8 18037278
    Sylwek L.L
    Level 2  
    Posts: 4
    Rate: 2
    And where is this dispenser located? so that I can do it tomorrow.
  • #9 18037493
    decybel91
    Level 43  
    Posts: 7987
    Help: 1020
    Rate: 4191
    Access from the bottom, right in front of the DPF.
  • #10 18039795
    slawarek
    Level 16  
    Posts: 480
    Rate: 209
    The fuse next to the lamp was burning. There are three of them next to each other and the one in the middle was burning when I tested the spark plug relay program (or whatever they call it). I disconnected the plug at the bottom from the spark plug and connected the bulb, which was flashing on the test and the fuse was not burning. It couldn't be simpler. There was a short circuit on the spark plug itself due to rust and it could not be repaired.
    My friend replaced the entire element of this candle, the price is PLN 850 for a new one.
    After replacement, automatic firing occurred because the system was functional.
  • #11 19007181
    Rob-stal
    Level 2  
    Posts: 2
    Rate: 14
    A question for my friend decibel91: where exactly is the box with the relay and the DPF injector fuse located? Maybe someone else solved this problem with the P15BE error, the check light is on after removing the error and turning off the car, the error returns after about 5 minutes, the car drives normally, the injector was replaced with a new one, there is voltage on the connector.
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  • #12 19007626
    decybel91
    Level 43  
    Posts: 7987
    Help: 1020
    Rate: 4191
    In the box under the hood, it looks like an added fuse strip.
  • #13 19007646
    Rob-stal
    Level 2  
    Posts: 2
    Rate: 14
    Yes, but I only have a relay there, when I disconnect it, the car does not start.
    Peugeot Boxer 2.2 HDI - Error p15BE diagram or consultation needed
  • #14 19007788
    decybel91
    Level 43  
    Posts: 7987
    Help: 1020
    Rate: 4191
    Bridge the relay and see what it turns on.
  • #15 20172555
    Kubi491
    Level 4  
    Posts: 7
    Rate: 2
    I see an old topic, maybe someone can help. I have the same error, but the problem is that there is no current on the cube from the spark plug at the DPF and when the car warms up, it loses power and this error appears. I will add that when I disconnect the cube from the temperature sensor, the car has power. Boxer 2.2 HDI 2013.
    Tablet displaying error code P15BE for a diesel engine.
  • #16 20359477
    piotrekmaciaszek12
    Level 1  
    Posts: 1
    Rate: 7
    My 20A fuse under the hood blew, the error was cleared, and everything works.
  • #17 21172275
    EMOZ
    Level 9  
    Posts: 19
    Rate: 2
    Gentlemen, perhaps someone will know.

    I have the same error.
    P15BE
    The fuse was blown, I inserted a new 20A.
    I replaced the T20 relay
    I replaced the injector.
    Still the error comes back and the engine enters emergency mode.
    I checked on autodoc, as soon as the computer wants to apply current to the plug (new), zero response. I connected an H7 bulb in place of the candle and a meter. No current arrives at all, not for a second.

    Somewhere someone described that they plugged a wire from a 20A fuse from the 5th injector into a T30 relay, but I can't find information anywhere on what the T30 relay is from.
    I'm about to tear my hair out....
  • #18 21434941
    allanmorrison
    Level 1  
    Posts: 1
    Rate: 1
    I have the same problem with the fuse for vaporizer blowing regularly and P15BE(73) showing on diagnostics.
    On closer look the wiring harness under the fuse box has been badly melted. I'm guessing the vaporizer went faulty causing high current, just not high enough to blow the fuse immediately, so the wire got red hot. The wire supplying the vaporizer glow plug is far too thin gauge and doesn't look like it would handle much more than 5A never mind 25A which is needed to blow the fuse.
    Now there's just a mess of melted insulation and several fuses are popping!
    I'll try to replace the melted wiring and see if it comes back to life!
    Damaged and melted electrical wiring harness under the fuse box.
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Topic summary

✨ The discussion revolves around the Peugeot Boxer 2.2 HDI experiencing error code P15BE, which is related to the fuel vapor valve and its associated components. Users report issues with melted wiring, blown fuses, and malfunctioning relays affecting the spark plug for the DPF (Diesel Particulate Filter). Suggestions include checking the fuse box, replacing the relay, and inspecting the wiring harness for damage. Some users have successfully resolved the issue by replacing blown fuses and faulty components, while others continue to seek diagrams and further assistance. The DPF candle is believed to ignite soot with fuel vapors, and several users mention similar problems in related models like the Citroen Jumper.
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FAQ

TL;DR: P15BE on Boxer/Jumper often traces to a blown or starved 20A feed; "Check fuse no. 5, maxi 20A." Fix the under‑hood fuse/relay, vaporizer glow plug, or harness to restore DPF regen. [Elektroda, przemas7, post #17763240] Why it matters: For Peugeot Boxer and Citroën Jumper 2.2 HDI owners, this FAQ shows how to diagnose and fix P15BE fast, without guesswork.

Quick Facts

What does P15BE mean and what symptoms should I expect?

P15BE flags a fault driving the DPF vaporizer glow plug. The ECU commands current but sees no response. The engine can enter emergency mode and lose power. Users reported no current reaching the plug despite new fuse, relay, and injector. Focus checks on restoring that power feed. [Elektroda, EMOZ, post #21172275]

Which fuse should I check first for P15BE?

Check Maxi Fuse No. 5, rated 20A, in the fuse box. Replace if blown and retest the circuit. Many fixes start here and end unnecessary parts swapping. Label the fuse after verification for future reference. [Elektroda, przemas7, post #17763240]

Where is the vaporizer fuse and relay located?

Look for a small additional box inside the under‑hood fuse box. It typically holds one red relay and one fuse. Remove the cover and inspect both for heat signs. “Small additional box in the box under the hood, one red relay and one fuse.” [Elektroda, decybel91, post #18037250]

Where is the DPF fuel dispenser/vaporizer on the vehicle?

Access it from underneath, right in front of the DPF. Safely raise the vehicle and locate the unit ahead of the particulate filter. The glow‑plug connector is at that assembly. Clean access improves diagnosis and replacement time. [Elektroda, decybel91, post #18037493]

How do I quickly confirm a shorted vaporizer glow plug?

Use this 3‑step check:
  1. Unplug the glow‑plug connector at the vaporizer.
  2. Connect an H7 bulb in its place as a test load.
  3. Run the relay actuator test; if the bulb flashes and the fuse holds, the original plug is shorted. One rust‑shorted plug blew the fuse during test and needed replacement. [Elektroda, slawarek, post #18039795]

What resistance should the vaporizer glow plug show?

Approx. 1.2 Ω was measured on a unit considered OK. This low resistance indicates a high‑current heater element. Measure across the plug pins with the connector off. Compare similar readings before condemning the plug. [Elektroda, thesperado, post #17754207]

My scan tool toggles the relay, but the relay output has no 12V. Why?

One working contact goes to the plug; the other should have fused 12V. If that feed is missing, suspect an internal BSM/BSI path or a break between fuse and relay. The module detects missing components; a missing relay coil can set P15BB. [Elektroda, thesperado, post #17764652]

Can a clogged dispenser trigger P15BE, and how should I clean it?

Yes, a blocked dispenser can restrict dosing and fault the system. If the relay and fuse check out, remove the dispenser and wash it thoroughly. Ensure fuel flows freely before refitting. “The fuel must flow freely through it.” [Elektroda, decybel91, post #18037250]

My 20A fuse keeps blowing. Could the glow plug be the cause?

Yes. A corroded glow plug can short and pop the supply fuse during tests. Substituting a bulb confirmed the circuit; replacing the glow‑plug assembly fixed it. After replacement, the system initiated automatic firing for regeneration. [Elektroda, slawarek, post #18039795]

The harness under my fuse box is melted and multiple fuses pop. What now?

This indicates severe overheating on the vaporizer glow‑plug feed. One owner reported thin gauge wiring, melted insulation, and several fuses then blowing. Replace or repair the damaged wiring first. Recheck vaporizer current draw after wiring restoration. [Elektroda, allanmorrison, post #21434941]

I see P15BE-73 and P1490-92 together. Are these related to the same system?

Owners have reported P15BE‑73 together with P1490‑92 while working on the DPF fuel dosing/vaporizer circuit. Treat these as variants tied to the same subsystem. Prioritize fuse, relay, dispenser, and wiring checks. [Elektroda, slawarek, post #18012432]

Will replacing the vaporizer “candle” fix P15BE, and what’s the cost?

Replacement solved the fault for one owner and regeneration started automatically. The new assembly cost about PLN 850. Confirm the 20A fuse holds and the actuator test passes after installation. Clear codes, then monitor regeneration status. [Elektroda, slawarek, post #18039795]

Warm engine loses power with P15BE, but unplugging the temperature sensor restores power. Why?

One report noted no current at the vaporizer plug, plus power loss when hot. Disconnecting the temperature sensor temporarily restored power. This points toward the ECU limiting output under a detected drive fault. Restore current to the vaporizer circuit to proceed. [Elektroda, Kubi491, post #20172555]

I only see a single relay, and disconnecting it stops the car from starting. How do I verify its function?

Bridge that relay to see which system energizes. This confirms whether it is the main relay or the DPF vaporizer relay. Identify its load before further changes to avoid misdiagnosis. [Elektroda, decybel91, post #19007788]

Can P15BE be solved by replacing just a blown 20A fuse?

Yes. One owner replaced the under‑hood 20A fuse, cleared the code, and everything worked. Verify the root cause to prevent a repeat failure. Monitor after a few drive cycles. [Elektroda, piotrekmaciaszek12, post #20359477]
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