The injector driver module (separate on some diesels) has faulted.
P0611 — also written PO611, P 0611, 0611 — is the OBD-II code for fuel injector control module performance. Same code, same fix: this page covers every spelling of it.
This code means the 'brain' responsible for firing your injectors has developed a headache, usually seen on older Transit Duratorqs and VAG PD engines where the module or loom has degraded.
P0611 is a electrical fault code, typically costing £300–£1200 to put right in a UK garage.
What P0611 actually feels like to drive
- The van starts fine but dies suddenly as soon as you put it under load.
- 'Limp home' mode with the glow plug light flashing or the 'Cog' light on the dash.
- Engine sounds like a 'bag of nails' because the injector timing is way out.
- Total non-start, turning over strongly but with zero combustion.
- Intermittent stalling that clears if you cycle the ignition key.
What causes P0611?
- Failed FICM
- Wiring fault
UK vehicles that throw P0611 most often
- Ford Transit 2.4 TDCi (2006-2011) - Very common on the RWD models.
- Land Rover Defender 2.4 TD4 (2007-2011) - Same Puma engine as the Transit.
- Volkswagen Transporter T5 2.5 TDI (PD engines) - Internal loom issues.
- Vauxhall Vivaro 2.0 CDTi (M9R engine) - Wiring loom rub-throughs.
- Mazda 6 2.0 Diesel (RF-GTI engine) - Early Denso systems.
How P0611 is fixed
- Repair or replace FICM
The P0611 misdiagnosis that wastes money
I’ve seen dozens of lads rush to swap out a full set of injectors thinking it’s a mechanical fuelling issue. On the Transit Mk7 2.4, they’ll spend £800 on new Denso units only for the P0611 to pop right back up. It’s almost never the injectors themselves. It’s either the internal capacitors in the FICM failing or, more often than not, a corroded earth strap or a chaffed loom behind the cylinder head that’s causing the module to lose its mind. Check your voltages before you touch a spanner to an injector.
What a UK garage should charge for P0611
A diagnostic plug-in will cost you £60-£90 at an indie. If the module is toast, a new one from a dealer is easily £800 plus VAT. A specialist repair of your own unit is usually £250 plus two hours of labour at roughly £70/hr to remove and refit. If it’s just the wiring loom—common on the Transits—you’re looking at about £150 for a loom repair. Total bill usually lands between £350 (repair) and £1,200 (new dealer part).
P0611 repair cost in the UK
Most P0611 repairs land between £300–£1200 including parts and labour. The spread is wide because the cheap fix (a sensor, a hose, a leak) and the expensive fix (a major component) throw the same code — which is why a proper diagnosis before parts are bought saves the most money.
Bob's tip on P0611
If your local garage says you need a brand-new module from the main dealer, tell them to hold their horses. For Ford and VAG vans, there are specialist ECU repair firms in the UK (like ECU Testing or BBA-Reman) who can rebuild your original unit for about £250-£300 with a lifetime warranty. It saves you a fortune on 'coding' because your original VIN and immobiliser data stays on the chip. Always ask for a 'bench test' of your module before agreeing to a £1,000+ replacement part.
Can you drive with P0611?
May not run.
Urgency: high.