Citroën Turbo

Citroën Turbos from the DW10TD to the DV5RC: Thirty Years of Engine Codes to Find the Right Part

On a Citroën, the engine code stamped on the block is the essential starting point before searching for any turbo. The same model — C4, Berlingo, C5 — may have been fitted with several different engines over the same period, and two engines of identical capacity do not necessarily share the same turbo. The 2.0 HDi alone comes in several variants: RHY / DW10TD for the 90 hp, RHM, RHT, RHZ for the 107 to 110 hp versions, RHH for the 163 hp, RHE, AHR for the 150 hp — distinct codes, distinct turbos, not interchangeable with one another.

Diesel: From the 1.4 HDi to the 2.2 HDi — Engine Families and Identification Pitfalls

The 1.6 HDi accounts for the greatest variety of engine codes across the Citroën range. The 75 and 90 hp versions carry DV6ATED4 or DV6B; the 109–112 hp versions move to DV6C, DV6TED4; references 9HJ, 9HP, 9HS, 9HY, 9HZ cover several power outputs of the 1.6 HDi depending on the generation. The move to the 1.6 BlueHDi (codes 9HC, 9HD, BHX, BHZ, BHY, BHS, BHV, BHW, 9HK, 9HN) introduces a different variable geometry: a BlueHDi code is not interchangeable with its HDi equivalent of the same stated power output. The 1.5 BlueHDi — very widespread on the C3, C4 Cactus and Berlingo — comes in DV5RD, DV5RE, DV5RCF and YH01 for the 75 to 102 hp versions, and DV5RC for the 130–131 hp: two closely related families that are nonetheless not interchangeable. The 2.2 HDi (C8, Jumper) uses codes 4HU and 4HV; the 2.8 HDi Jumper is based on the 8140.43S. The 1.4 HDi (Nemo, C1, Berlingo) carries 8HS, 8HT or DV4TD depending on the power output (54 to 70 hp): here again, power output alone is not enough to identify the correct part.

Petrol Turbo: 1.2 PureTech / THP and 1.6 THP — Symptoms and Identification

The 1.2 PureTech / THP (C3, DS3, C4 Cactus) is represented here in 110 and 130 hp versions. Codes EB2DT, EB2DTS, EB2ADT, EB2ADTS and the HNP, HNS, HNV, HNY, HNZ family cover these power outputs, but the match between engine code and turbo reference depends on the exact generation of the engine. This block is known to be sensitive to lubrication quality: the turbo oil feed pipe can become clogged and the bearings can wear if the oil has degraded or service intervals have been exceeded. On the 1.6 THP (DS3, DS4, C4), codes EP6DT, EP6FDT, 5FR, 5FV correspond to the 150 to 165 hp variants. The classic symptoms of a failing turbo on these engines — whistling, blue smoke under acceleration, a marked loss of power or the vehicle entering limp mode — should always prompt investigation of the root cause (oil pressure, condition of the lubrication circuit, diesel particulate filter) before any replacement is carried out: fitting a reconditioned turbo without addressing the underlying cause will lead to rapid repeat failure. The collection covers thirteen Citroën models, with new and reconditioned turbos available depending on the reference.