SID208 - Ford Transit Engine ECU
The SID208 is an engine ECU manufactured by Continental for various 2.2L TDCi Ford vehicles. You’ll commonly find the SID208 fitted to the 2011-2016 Ford Transit and second-generation Transit Custom.
You might have noticed that the period of time the Ford Transit was fitted with a SID208 ECU spans over a generation change (late Mk7 to early Mk8) – which is uncommon.
Well, the release of the SID208 by Ford coincided with the implementation of Euro 5b emission standards – a more stringent phase of the Euro 5 regulations that further restricted particulate matter emission limits for diesel vehicles. Despite doing a great job of mitigating the emissions of the heavy-duty vehicles they’re fitted to, SID208s are prone to serious reliability issues.
These units were produced with poor-quality components which are now beginning to break down earlier than they should do in the product’s lifecycle. This can sometimes be the case when a large manufacturer quickly mass produces a product to align with the ever-changing landscape of automotive legislation.
These component breakdowns tend to occur gradually, with symptoms worsening over time. Inevitably though, this eventually prevents the engine from starting and prevents diagnostic communications with the module.
Ford Transit Injector Fault
When met with starting issues or a lack of power, plenty of Ford Transit owners are quick to condemn their SID208 ECU as faulty. However, the 2.2L Duratorq Transit is renowned for injector problems.
A common fault for this generation of Transit occurs when one or more of its piezo injectors wears, cracks or fails to seal properly. This causes more fuel to slip past the injector’s internal control valve than intended and flow into the return line, rather than into the combustion chamber.
This inevitably causes lower pressure in the rail as fuel is escaping faster than the pump can keep up with. Combine this with the fact less fuel is reaching the combustion chamber and you’ll soon notice your Transit lacks power – if it’ll even run at all.
Because of this, it’s important to thoroughly check the condition of the injectors before condemning the Ford Transit’s SID208 ECU. One way this can be done is through a fuel return flow test. This tests the fuel injector for back leakage to identify an injector that’s not functioning correctly, this is done by measuring the volume of fuel flowing back to the tank. You’d expect all four to return a similar amount of fuel, therefore a fuel injector that has significantly more or less fuel flowing back, identifies an injector that is faulty and should be replaced.
Vehicles fitted with a SID208 ECU:
- Citroen Relay 2011-2017
- Ford Ranger 2011-2015
- Ford Tourneo Custom 2012-2015
- Ford Transit 2011-2016
- Ford Transit Custom 2012-2016
- Land Rover Defender 2012-2016
- Peugeot Boxer 2012-2016
Common SID208 failure symptoms:
- No start
- No communication with the Ford Transit ECU
- Engine cutting out
- Engine warning light on
- Limp mode
Common SID208 Part Numbers:
- S180146251
- S180129101
- S180146202
- S180145002
- S180145001
- S180129001
- S180140002
- S180139001
- S180140301
- S180146402
Location on the vehicle:
On the Ford Transit, you’ll find the SID208 positioned towards the back of the engine bay on the right-hand side (looking towards the vehicle from the front bumper). For the Ford Ranger T6, the SID208 ECU will actually be positioned just to the left of the engine bay fuse box.