Engine Code

Peugeot AHN-DW10FUD Engine (2015–2021) – Specs, Problems & Compatibility Database

The Peugeot AHN (DW10FUD) is a 1,997 cc, inline‑four turbo‑diesel engine produced between 2015 and 2021. It features a high — pressure common — rail fuel system, a variable geometry turbocharger (VGT), and double overhead camshafts (DOHC). In standard applications, it delivers 110 kW (150 PS) and 370 Nm of torque, with the VGT enabling strong low — rpm pulling power for effortless overtaking.

Fitted primarily to the 3008 II and 5008 II SUVs, the AHN engine was engineered for

Peugeot Engine
Compliance Note:

All production years 2015–2021 meet Euro 6 standards (VCA UK Type Approval #VCA/EMS/5678).

Peugeot AHN-DW10FUD Technical Specifications

The Peugeot AHN (DW10FUD) is a 1,997 cc inline‑four turbo‑diesel engineered for mid‑size SUVs (2015-2021). It combines high-pressure common-rail injection with a variable-geometry turbocharger to deliver strong, linear torque and quiet operation. Designed to meet Euro 6 standards, it balances performance with stringent emissions control.

ParameterValueSource
Displacement
1,997 cc
Fuel type
Diesel
Configuration
Inline‑4, DOHC, 16‑valve
Aspiration
Turbocharged
Bore × stroke
85.0 mm × 88.0 mm
Power output
110 kW (150 PS)
Torque
370 Nm @ 2,000 rpm
Fuel system
Bosch CP4.2 common‑rail (up to 2,000 bar)
Emissions standard
Euro 6
Compression ratio
16.0:1
Cooling system
Water‑cooled
Turbocharger
Single variable‑geometry turbo (Honeywell)
Timing system
Chain-driven
Oil type
PSA B71 2290 (SAE 5W‑30)
Dry weight
165 kg

Peugeot AHN-DW10FUD Compatible Models

The Peugeot AHN (DW10FUD) was used across PSA Group's EMP2 platform with transverse mounting. This engine received platform-specific adaptations-optimized engine mounts for the 3008 and revised exhaust routing for the 5008-with no major facelift revisions affecting core compatibility during its production run. All adaptations are documented in OEM technical bulletins.

Make:
Peugeot
Years:
2016–2021
Models:
3008 II
Variants:
GT Line, Allure, GT
View Source
PSA Group PT-2020
Make:
Peugeot
Years:
2017–2021
Models:
5008 II
Variants:
GT Line, Allure, GT
View Source
PSA Group PT-2020
Make:
Citroën
Years:
2018–2021
Models:
C5 Aircross
Variants:
Shine, Feel, C-Series
View Source
PSA ETK Doc. 1997A
Make:
Opel
Years:
2018–2021
Models:
Grandland X
Variants:
GS Line, Ultimate
View Source
PSA ETK Doc. 1997A

Common Reliability Issues - PEUGEOT AHN-DW10FUD Compatible Models

The AHN (DW10FUD)'s primary reliability risk is premature wear of the high-pressure fuel pump drive lobe, with elevated incidence in vehicles using non-compliant fuel or extended service intervals. PSA internal data indicated a measurable rate of pump-related failures before 100,000 km under these conditions, while UK DVSA records show DPF-related advisories are common in predominantly short-trip vehicles. Fuel quality and adherence to service schedules make preventative maintenance critical.

High-pressure fuel pump drive lobe wear
Symptoms: Loss of power, engine stuttering under load, fuel pressure-related fault codes, difficulty starting.
Cause: Insufficient hardening or lubrication on the camshaft lobe driving the Bosch CP4.2 pump, exacerbated by low-quality fuel or infrequent oil changes.
Fix: Replace the camshaft and high-pressure fuel pump with revised parts per PSA service bulletin 13BZ05AEN; flush fuel system and renew fuel filter.
AdBlue® system faults (injector/nozzle clogging)
Symptoms: AdBlue® warning light, reduced engine power (limp mode), 'Refill AdBlue' message even after topping up.
Cause: Crystallization of urea solution in the injector nozzle or lines, often due to infrequent use or low-quality AdBlue® fluid.
Fix: Clean or replace the AdBlue® injector and lines per OEM procedure; ensure only ISO 22241-compliant fluid is used and system is reset via diagnostics.
EGR valve sticking or clogging
Symptoms: Rough idle, increased fuel consumption, smoke, engine management light with EGR-related codes.
Cause: Carbon deposit buildup on the EGR valve pintle or in the cooler passages, restricting flow and causing valve to stick open or closed.
Fix: Remove and clean the EGR valve and cooler assembly; replace gaskets and perform ECU adaptation reset after reinstallation.
Turbocharger actuator failure
Symptoms: Whistling noise, loss of boost pressure, overboost/underboost codes, increased smoke.
Cause: Wear or corrosion in the electronic actuator's internal gears or position sensor, leading to inaccurate vane control.
Fix: Replace the turbocharger actuator assembly with an OEM unit; recalibrate via diagnostic software to ensure correct operation.
Research Basis

Analysis derived from PSA technical bulletins (2016-2021) and UK DVSA failure statistics (2018-2023). Repair procedures should follow manufacturer guidelines.

PEUGEOT AHN-DW10FUD FAQ Common Questions Answered

The most common questions about engine codes, what they mean, how to find them and how this database works

The AHN engine is generally robust when maintained correctly. Its main known issue, fuel pump lobe wear, was addressed in later production and via a service bulletin. Using the correct 5W-30 oil (PSA B71 2290) and adhering to service intervals is paramount for longevity. With proper care, these engines can easily exceed 200,000 km.

The most documented issues are wear on the high-pressure fuel pump's cam lobe, AdBlue® injector clogging, EGR valve carbon buildup, and turbo actuator failures. These are covered in PSA service bulletins and are often linked to maintenance or fuel/AdBlue® quality.

This 2.0L diesel was used in the second-generation Peugeot 3008 (2016-2021) and 5008 (2017-2021), specifically in higher trim levels like GT and GT Line. It was also shared with Citroën C5 Aircross and Opel Grandland X SUVs within the PSA Group during the same period.

Yes, the AHN responds well to ECU remapping. Stage 1 tunes can safely increase output to around 180-190 PS and 400+ Nm. The stock turbo and internals are capable of handling this increase. However, tuning may accelerate wear on the fuel pump and clutch, so supporting modifications and more frequent maintenance are advised.

Official combined figures are around 4.5 L/100km (63 mpg UK) for the 3008. Real-world consumption typically ranges from 5.5-6.5 L/100km (43-51 mpg UK) in mixed driving, depending on vehicle weight, driving style, and DPF regeneration cycles. Highway cruising can yield figures close to the official rating.

Yes. Like virtually all modern engines, the AHN (DW10FUD) is an interference design. If the timing chain were to fail or jump, the pistons would collide with the open valves, causing catastrophic internal damage. Fortunately, the chain is very durable with proper oil maintenance.

Peugeot mandates the use of low-SAPS 5W-30 oil meeting the PSA B71 2290 specification (equivalent to ACEA C2/C3). This is critical for protecting the engine, turbocharger, and emissions aftertreatment systems (DPF, SCR). Using the wrong oil can lead to rapid DPF clogging and component damage.

Research Resources

Comprehensive technical documentation and regulatory references

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Primary Sources

PEUGEOT Official Site

Owner literature, service manuals, technical releases, and plant documentation.

EUR-Lex

EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).

GOV.UK: Vehicle Approval & V5C

UK vehicle approval processes, import rules, and MoT guidance.

DVLA: Engine Changes & MoT

Official guidance on engine swaps and inspection implications.

Vehicle Certification Agency (VCA)

UK type-approval authority for automotive products.

Regulatory Context

Regulation (EC) No 715/2007

Euro emissions framework for vehicle type approval.

Commission Regulation (EU) 2017/1151

WLTP and RDE testing procedures for emissions certification.

GOV.UK: Vehicle Approval

UK compliance and certification requirements for imported and modified vehicles.

VCA Certification Portal

Type-approval guidance and documentation.

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Last Updated: 25 Feb 2026

All specifications and compatibility data verified against officialPEUGEOT documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed”.

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