From the workshop
It started with a trouble code for the EGR valve. After diagnostics, a code reset and a re-drive, the exhaust pressure control valve came up: a part that sits under the car, open to all the elements.
34 seconds, with captions. Full transcript below.
So this one was a, uh, 2018 plate Audi A3 1.6 TDI.
It’s coming up with a trouble code for the EGR valve, um, to start off with.
After doing a bit of diagnostics and resetting the codes and re-driving, it started to come up with an exhaust pressure control valve.
And these are pretty common on these, these Audis because they sit underneath the car on the exhaust.
They’re open to all the elements.
Uh, it basically controls the pressure through the exhaust and allows the engine to heat up quicker.
Sometimes you can get symptoms of erratic idling and various different things, but this year, this one, this one was a pretty interesting job, so got it sorted anyway.
Customer was happy.
This Audi came in with a trouble code for the EGR valve. After some diagnostics the codes were reset and the car was re-driven, and that is when the exhaust pressure control valve came up. Reading the first code and stopping there would have missed what came next.
Elliot puts it down to where they sit: underneath the car on the exhaust, open to all the elements. In the video the old valve is on the bench next to the new one, so you can see the difference.
It controls the pressure through the exhaust and allows the engine to heat up quicker. Sometimes you can get symptoms such as erratic idling. If your car is idling oddly or has a warning light on, a proper scan will show what the engine is reporting before anyone orders a part.
The diagnostics page explains what you actually get for the fee, why a code reader on its own is not a diagnosis, and what happens if we cannot find the fault.
How our diagnostics work, and what they costEvery one filmed in the Dudley workshop, with the mechanic who did the work explaining it.
See all workshop videosSend us the registration and the code, or just what the car is doing. We will tell you what it points to on your car before anyone orders a part.