In-tank fuel pump control circuit open.
P0627 — also written PO627, P 0627, 0627 — is the OBD-II code for fuel pump control circuit open. Same code, same fix: this page covers every spelling of it.
This is your car's brain telling you it's lost the electrical connection to the lift pump in the tank. It's a 'stop-dead' fault very common on diesel Fords and Vauxhalls where the wiring harness takes a beating.
P0627 is a fuel & air fault code, typically costing £200–£700 to put right in a UK garage.
What P0627 actually feels like to drive
- The car just turns over and over but won't catch (no-start).
- Cutting out suddenly while driving, usually at motorway speeds.
- Total silence from the rear of the car when you turn the ignition on—no 'prime' hum.
- Engine starts for two seconds then dies (common on VAG cars).
- Intermittent stalling when going over speed bumps or rough Scottish backroads.
What causes P0627?
- Failed pump
- Wiring break
- Failed relay or fuse
UK vehicles that throw P0627 most often
- Vauxhall Insignia 2.0 CDTi (A20DTH) 2009-2015
- Ford Focus 1.6 TDCi (DV6) 2011-2018
- Volkswagen Golf Mk6 2.0 TDi 2008-2013
- Vauxhall Astra J 1.7 CDTi 2010-2014
- Land Rover Freelander 2 2.2 SD4 2006-2014
- Nissan Qashqai 1.5 dCi (K9K) 2007-2013
How P0627 is fixed
- Replace pump
- Repair wiring
- Replace relay
The P0627 misdiagnosis that wastes money
I see lads jumping straight to the pump every time because 'Open Circuit' sounds like a dead motor. They'll spend £300 on a new Bosch unit only to find the car still won't fire. On Vauxhall Insignias and Astra Js, we often find the pins have literally rotted away inside the connector on top of the tank, or the Fuel Pump Control Module (FPCM) has given up the ghost. Before you drop the tank, check the relay in the under-bonnet fuse box; I’ve seen burned contacts there cause this exact 'open' fault more times than I can count.
What a UK garage should charge for P0627
An initial diagnostic plug-in will run you £60-£90 at an indie. If it's just a relay, you're looking at £15 for a genuine part and 20 mins labour. However, if the pump's genuinely toasted, a quality OE unit (like Pierburg or Delphi) is £180-£350, plus 2-3 hours of labour to drop the tank if there’s no access hatch. Total bill usually lands between £350 and £550. Avoid the £40 'no-name' pumps from eBay; they usually last about as long as a sunny day in Glencoe.
P0627 repair cost in the UK
Most P0627 repairs land between £200–£700 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 P0627
If you're taking this to a garage, insist they do a 'load test' on the circuit with a headlight bulb, not just a multimeter. A multimeter might show 12V, but if the wire is down to a single strand, it won't have the 'guts' to run the pump. Also, ask them to check the earth point near the rear arch—Scottish grit and salt love to eat those terminals. If they tell you it’s a 'dead pump' without checking the FPCM for corrosion, they're just guessing with your wallet.
Can you drive with P0627?
May not start.
Urgency: high.