KNOWN FAULTS · Opel

Opel Mokka (B) 1.5 Diesel (BlueHDi) common problems.

2020–2026 · Diesel

Sources are not verified in real time and no entry confirms that your car is affected.

4 known faults with sources

AdBlue system failure (start countdown)Exhaust and emissions (AdBlue)

Engine / equipment: 1.5 / 1.6 / 2.0 BlueHDi with AdBlue (Peugeot, Citroën, DS, Opel)
Period mentioned: Approx. 2014 onwards
Symptoms: Emission system fault message and a “starting impossible in X km” countdown, AdBlue/UREA warning and engine light.
Possible cause described: Failure of the AdBlue tank pump module (circuit board, pressure sensor or heater) or of the AdBlue injector. The engine does not stop while driving, but once the countdown reaches zero it will not restart.
Check for the garage: Diagnose with Diagbox or equivalent: AdBlue pressure, flow test and tank temperature.
Cost cited in the source: Complete module or tank: approx. €600–1,500 (estimate)A rough figure from the original database, not an up-to-date quote.

1.5 BlueHDi camshaft chainValve timing

Engine / equipment: 1.5 BlueHDi (DV5): Peugeot 208/2008/308/3008/5008/508/Rifter, Citroën C3/C4/C5 Aircross/Berlingo, Opel, DS, Fiat
Period mentioned: 2017–2023
Symptoms: Rattle from the top of the engine, loss of power; in severe cases the chain breaks and the engine fails.
Possible cause described: The 7 mm chain linking the two camshafts wears prematurely, influenced by soot in the oil. Stellantis replaced it with an 8 mm chain in 2023 and opened an inspection campaign.
Check for the garage: Ask the dealer whether the car is in the campaign (free inspection and replacement if needed) and whether the 8 mm chain is fitted.
Cost cited in the source: €700–1,400 for the chain; €4,000–7,000 if it breaksA rough figure from the original database, not an up-to-date quote.

Applies if: Only if fitted with the automatic gearbox described in the record.

EAT6/EAT8 jerking and torque converterAutomatic gearbox

Engine / equipment: Aisin EAT6 and EAT8 automatic gearboxes (308, 3008, 5008, 508, 2008, C4 Picasso, C5 Aircross, C4, DS 7, Grandland…)
Period mentioned: 2013–2026
Symptoms: Hesitation or a jolt between 1st and 2nd, torque converter shudder in traffic, harsh or delayed shifts and a gearbox fault warning, especially on 2017–2019 3008s.
Possible cause described: Torque converter wear or drift, valve deposits from degraded oil and software faults. Peugeot treats the oil as lifetime, but dirty or low oil causes harsh shifts.
Check for the garage: Check oil level and condition, update the gearbox software at the dealer and, after an oil change, record it with DiagBox and reset the adaptations.
Cost cited in the source: Oil change and update: the most common fix; torque converter or valve body: specialist garage repairA rough figure from the original database, not an up-to-date quote.

Applies if: Only cars built from 16/2/2021 to 23/7/2021 (campaign 21-C-182). Confirm by VIN.

Front wipers that stop working in the cold after parking (2021 Opel Mokka)Electrical and electronic systems

Engine / equipment: Second-generation Opel Mokka, Mokka-e included (all versions)
Period mentioned: 2021
Symptoms: Below 3 °C, after the car has been parked, the front wipers do not work and only come back once you pass 10 km/h or restart with the key.
Possible cause described: A software fault in the BSI computer (the one that runs the cabin electrics). Opel recalled the Mokka built from 16/2/2021 to 23/7/2021 (campaign 21-C-182, 2,586 cars in France) to reprogram it; no part is replaced.
Check for the garage: Check by VIN with Opel whether the car is in campaign 21-C-182 and whether it has been done. Before replacing the wiper motor or stalk, check whether the fault only appears in the cold and clears once you pass 10 km/h.
Cost cited in the source: Free under the recall.A rough figure from the original database, not an up-to-date quote.