Volvo V50 D5 EGR Valve positioning fault, diagnosis and repair  (codes 4450, 44D0 and limp mode) @dynoguy
Volvo V50 D5 EGR Valve positioning fault, diagnosis and repair  (codes 4450, 44D0 and limp mode)  @dynoguy
Uploaded August 2021 | Updated September 2026, 3 weeks ago
Back again on the Volvo V50 D5 SE. In this episode we trace and repair a fault with the EGR system.
It started off with intermittent limp mode (no power, poor acceleration), but over about a week, the
fault became permanent and the car was not really driveable anymore. Time to have a closer look.
It turned out the EGR valve is mechanically ok, so just another electronics issue.
Follow us on the journey to the solution.

The procedure as shown does apply to Volvo C30, S40, V50 V70 models with the Euro 4 D5 engine,
(5 cyl, 2.4 ltr Diesel with DPF)
Depending on engine mapping and transmission, values might be slightly different, but the general principle is exactly the same.

This particular car is an RHD 2007 Volvo V50 D5 SE with an AW55-51 automatic transmission,
current mileage is around 167000 miles (267200 km)

The Volvo V50 Project playlist is here:
youtube.com/playlist?list=PLJ5sckhk3ninv5WtcdeannTCT0JQ9sm3f

(c) 2021
dynoguy.co.uk
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Volvo V50 D5 EGR Valve positioning fault, diagnosis and repair (codes 4450, 44D0 and limp mode)

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