https://obdcode.co.uk/guides/ UK fault-code, MOT and repair-cost guides from OBDCode UK, operated by RETRETO NEXT LIMITED. Built from official DVSA data. en-gb © 2026 OBDCode UK (RETRETO NEXT LIMITED, Company No. 15166864) hello@obdcode.co.uk (OBDCode UK editorial) hello@obdcode.co.uk (OBDCode UK) Wed, 09 Sep 2026 00:00:00 +0000 1440 https://obdcode.co.uk/guides/engine-management-light/ https://obdcode.co.uk/guides/engine-management-light/ Fri, 07 Aug 2026 00:00:00 +0000 2026-09-09 OBDCode UK editorial A steady engine management light means the computer has stored a fault. Drive with caution and get the code read. A flashing light is different — stop when it is safe. https://obdcode.co.uk/guides/used-2020-bmw-pre-purchase-obd2-scan/ https://obdcode.co.uk/guides/used-2020-bmw-pre-purchase-obd2-scan/ Fri, 07 Aug 2026 00:00:00 +0000 2026-09-08 OBDCode UK editorial A generic OBD2 reader can retrieve emissions-related stored, pending and permanent codes. A BMW-capable tool may reach more modules. https://obdcode.co.uk/guides/four-system-vs-all-system-obd2-scanner/ https://obdcode.co.uk/guides/four-system-vs-all-system-obd2-scanner/ Fri, 07 Aug 2026 00:00:00 +0000 2026-09-08 OBDCode UK editorial If the jobs you actually do are engine, gearbox, ABS and airbags, a four-system scanner is enough. https://obdcode.co.uk/guides/lifetime-scanner-updates-worth-the-premium/ https://obdcode.co.uk/guides/lifetime-scanner-updates-worth-the-premium/ Mon, 07 Sep 2026 00:00:00 +0000 2026-09-07 OBDCode UK editorial UK guide to lifetime scanner updates at £200–£400: compare renewal costs, VAT, coverage limits and ownership horizons. https://obdcode.co.uk/guides/car-cuts-out-when-slowing-down/ https://obdcode.co.uk/guides/car-cuts-out-when-slowing-down/ Fri, 07 Aug 2026 00:00:00 +0000 2026-08-14 OBDCode UK editorial What to do when a car stalls while slowing or at junctions, including safe observations and recovery triggers. https://obdcode.co.uk/guides/coolant-keeps-disappearing-no-leak/ https://obdcode.co.uk/guides/coolant-keeps-disappearing-no-leak/ Fri, 07 Aug 2026 00:00:00 +0000 2026-08-14 OBDCode UK editorial Safe observations when coolant falls without an obvious puddle and when to stop driving. https://obdcode.co.uk/guides/exhaust-smell-inside-car/ https://obdcode.co.uk/guides/exhaust-smell-inside-car/ Fri, 07 Aug 2026 00:00:00 +0000 2026-08-14 OBDCode UK editorial Immediate safety action for exhaust fumes in a car cabin and observation-only information for a garage. https://obdcode.co.uk/guides/car-clunking-over-bumps/ https://obdcode.co.uk/guides/car-clunking-over-bumps/ Fri, 07 Aug 2026 00:00:00 +0000 2026-08-14 OBDCode UK editorial Observation-only triage for a car that clunks over bumps, with steering, brake and recovery warning signs. https://obdcode.co.uk/guides/car-juddering-or-shaking/ https://obdcode.co.uk/guides/car-juddering-or-shaking/ Fri, 07 Aug 2026 00:00:00 +0000 2026-08-14 OBDCode UK editorial Safe symptom recording for vehicle judder or vibration and the conditions that require recovery. https://obdcode.co.uk/guides/car-loses-power-when-accelerating/ https://obdcode.co.uk/guides/car-loses-power-when-accelerating/ Fri, 07 Aug 2026 00:00:00 +0000 2026-08-14 OBDCode UK editorial Conservative triage for power loss under acceleration, including limp-mode and recovery triggers. https://obdcode.co.uk/guides/car-battery-keeps-draining/ https://obdcode.co.uk/guides/car-battery-keeps-draining/ Fri, 07 Aug 2026 00:00:00 +0000 2026-08-14 OBDCode UK editorial Safe observations for repeated 12-volt battery discharge and what to give a technician. https://obdcode.co.uk/guides/tyre-pressure-light/ https://obdcode.co.uk/guides/tyre-pressure-light/ Fri, 07 Aug 2026 00:00:00 +0000 2026-08-14 OBDCode UK editorial Safe tyre-pressure warning-light checks, damage stop conditions and MOT relevance. https://obdcode.co.uk/guides/car-diagnostic-test-cost/ https://obdcode.co.uk/guides/car-diagnostic-test-cost/ Fri, 07 Aug 2026 00:00:00 +0000 2026-08-14 OBDCode UK editorial UK booking marketplaces currently publish diagnostic averages of about £52–£65. Retrieved 2026-08-14. A written estimate for this vehicle is the only figure that counts. https://obdcode.co.uk/guides/dpf-cleaning-cost/ https://obdcode.co.uk/guides/dpf-cleaning-cost/ Fri, 07 Aug 2026 00:00:00 +0000 2026-08-14 OBDCode UK editorial How to compare DPF cleaning quotes and avoid treating a warning light as proof that cleaning is appropriate. https://obdcode.co.uk/guides/clutch-replacement-cost/ https://obdcode.co.uk/guides/clutch-replacement-cost/ Fri, 07 Aug 2026 00:00:00 +0000 2026-08-14 OBDCode UK editorial The RAC, citing FixMyCar in July 2026, puts a typical UK clutch replacement around £670. Retrieved 2026-08-14. A written estimate for this vehicle is the only figure that counts. https://obdcode.co.uk/guides/brake-pads-and-discs-cost/ https://obdcode.co.uk/guides/brake-pads-and-discs-cost/ Fri, 07 Aug 2026 00:00:00 +0000 2026-08-14 OBDCode UK editorial FixMyCar’s current marketplace averages: pads and discs £266; all-round front and rear pads and discs £555. Retrieved 2026-08-14. A written estimate for this vehicle is the only figure that counts. https://obdcode.co.uk/guides/cambelt-and-water-pump-cost/ https://obdcode.co.uk/guides/cambelt-and-water-pump-cost/ Fri, 07 Aug 2026 00:00:00 +0000 2026-08-14 OBDCode UK editorial Questions to ask for a cambelt and water-pump quote without publishing an unverified generic range. https://obdcode.co.uk/guides/wet-belt-replacement-cost/ https://obdcode.co.uk/guides/wet-belt-replacement-cost/ Fri, 07 Aug 2026 00:00:00 +0000 2026-08-14 OBDCode UK editorial How to compare wet-belt quotes without an unverified price range or copied workshop procedure. https://obdcode.co.uk/guides/alternator-replacement-cost/ https://obdcode.co.uk/guides/alternator-replacement-cost/ Fri, 07 Aug 2026 00:00:00 +0000 2026-08-14 OBDCode UK editorial Questions to ask before authorising an alternator replacement, without an unsupported UK price range. https://obdcode.co.uk/guides/car-battery-replacement-cost/ https://obdcode.co.uk/guides/car-battery-replacement-cost/ Fri, 07 Aug 2026 00:00:00 +0000 2026-08-14 OBDCode UK editorial FixMyCar’s current marketplace average for a fitted car-battery replacement is £217. Retrieved 2026-08-14. A written estimate for this vehicle is the only figure that counts. https://obdcode.co.uk/guides/timing-chain-replacement-cost/ https://obdcode.co.uk/guides/timing-chain-replacement-cost/ Fri, 07 Aug 2026 00:00:00 +0000 2026-08-14 OBDCode UK editorial How to compare timing-chain repair quotes without an unverified national price range. https://obdcode.co.uk/guides/catalytic-converter-replacement-cost/ https://obdcode.co.uk/guides/catalytic-converter-replacement-cost/ Fri, 07 Aug 2026 00:00:00 +0000 2026-08-14 OBDCode UK editorial FixMyCar currently says a catalytic-converter replacement usually costs £200–£900 fitted. Retrieved 2026-08-14. A written estimate for this vehicle is the only figure that counts. https://obdcode.co.uk/guides/wheel-bearing-replacement-cost/ https://obdcode.co.uk/guides/wheel-bearing-replacement-cost/ Fri, 07 Aug 2026 00:00:00 +0000 2026-08-14 OBDCode UK editorial How to compare wheel-bearing quotes without an unverified generic range. https://obdcode.co.uk/guides/head-gasket-repair-cost/ https://obdcode.co.uk/guides/head-gasket-repair-cost/ Fri, 07 Aug 2026 00:00:00 +0000 2026-08-14 OBDCode UK editorial How to compare head-gasket repair quotes without an unverified UK price range. https://obdcode.co.uk/guides/best-obd2-scanner-uk/ https://obdcode.co.uk/guides/best-obd2-scanner-uk/ Fri, 07 Aug 2026 00:00:00 +0000 2026-08-14 OBDCode UK editorial How to choose and use an OBD-II reader safely without treating a fault code as a parts diagnosis. https://obdcode.co.uk/guides/car-battery-health-check/ https://obdcode.co.uk/guides/car-battery-health-check/ Fri, 07 Aug 2026 00:00:00 +0000 2026-08-14 OBDCode UK editorial Safe observations for a 12-volt car battery, including hybrid and EV boundaries and garage hand-off. https://obdcode.co.uk/guides/mot-advisories-explained/ https://obdcode.co.uk/guides/mot-advisories-explained/ Fri, 07 Aug 2026 00:00:00 +0000 2026-08-14 OBDCode UK editorial What UK MOT advisories, minor, major and dangerous defects mean and how to prioritise the next action. https://obdcode.co.uk/guides/mot-cost/ https://obdcode.co.uk/guides/mot-cost/ Fri, 07 Aug 2026 00:00:00 +0000 2026-08-14 OBDCode UK editorial Great Britain MOT maximum car-test fee and partial-retest conditions for England, Scotland and Wales, including the £54.85 ceiling and questions to ask the test station. https://obdcode.co.uk/guides/mot-checklist/ https://obdcode.co.uk/guides/mot-checklist/ Fri, 07 Aug 2026 00:00:00 +0000 2026-08-14 OBDCode UK editorial A conservative UK pre-MOT walk-round covering lights, tyres, visibility, warning lamps and records. https://obdcode.co.uk/guides/appeal-an-mot-failure/ https://obdcode.co.uk/guides/appeal-an-mot-failure/ Thu, 13 Aug 2026 00:00:00 +0000 2026-08-13 OBDCode UK editorial How to appeal an MOT result to DVSA in Great Britain (England, Scotland and Wales), including form VT17 and deadlines; Northern Ireland uses DVA and nidirect. https://obdcode.co.uk/guides/choosing-a-garage-you-can-check/ https://obdcode.co.uk/guides/choosing-a-garage-you-can-check/ Thu, 13 Aug 2026 00:00:00 +0000 2026-08-13 OBDCode UK editorial Check a repair business within each directory’s scope, use the DVSA MOT list only in Great Britain, and use DVA test centres in Northern Ireland. https://obdcode.co.uk/guides/complain-about-an-mot-test-station/ https://obdcode.co.uk/guides/complain-about-an-mot-test-station/ Thu, 13 Aug 2026 00:00:00 +0000 2026-08-13 OBDCode UK editorial How to separate an MOT testing-standards complaint or result appeal from reporting suspected tester lawbreaking, and where refund or compensation claims belong. https://obdcode.co.uk/guides/complaining-to-a-garage-in-writing/ https://obdcode.co.uk/guides/complaining-to-a-garage-in-writing/ Thu, 13 Aug 2026 00:00:00 +0000 2026-08-13 OBDCode UK editorial What to put in a written complaint to a UK garage after a repair goes wrong: which contract term to name, what outcome to ask for and what response date to set. https://obdcode.co.uk/guides/diagnostic-fees-and-what-they-cover/ https://obdcode.co.uk/guides/diagnostic-fees-and-what-they-cover/ Thu, 13 Aug 2026 00:00:00 +0000 2026-08-13 OBDCode UK editorial What a garage diagnostic charge buys, what to fix in writing before the work starts, and what record to ask for when the fault is not found. https://obdcode.co.uk/guides/driving-with-a-dangerous-defect/ https://obdcode.co.uk/guides/driving-with-a-dangerous-defect/ Thu, 13 Aug 2026 00:00:00 +0000 2026-08-13 OBDCode UK editorial What a ‘dangerous’ MOT defect means officially, why a valid MOT is not permission to drive an unsafe car, and the sourced legal position on driving a vehicle in a dangerous condition. https://obdcode.co.uk/guides/electric-and-hybrid-high-voltage-work/ https://obdcode.co.uk/guides/electric-and-hybrid-high-voltage-work/ Thu, 13 Aug 2026 00:00:00 +0000 2026-08-13 OBDCode UK editorial Why EV and hybrid high-voltage faults are not DIY jobs, how to verify task-specific competence, and the separate Great Britain and Northern Ireland safety branches. https://obdcode.co.uk/guides/estimates-quotes-and-extra-work/ https://obdcode.co.uk/guides/estimates-quotes-and-extra-work/ Thu, 13 Aug 2026 00:00:00 +0000 2026-08-13 OBDCode UK editorial How an estimate differs from a quote in practice, what to fix in writing before work starts, and what to do when a garage asks for more money mid-repair. https://obdcode.co.uk/guides/independent-vehicle-inspection/ https://obdcode.co.uk/guides/independent-vehicle-inspection/ Thu, 13 Aug 2026 00:00:00 +0000 2026-08-13 OBDCode UK editorial What an independent vehicle inspection report can and cannot do in a garage dispute, when it is worth the cost, and how to find a qualified engineer. https://obdcode.co.uk/guides/insurance-total-loss-categories/ https://obdcode.co.uk/guides/insurance-total-loss-categories/ Thu, 13 Aug 2026 00:00:00 +0000 2026-08-13 OBDCode UK editorial What the A, B, S and N write-off categories mean, where the category is recorded, whether you can buy the salvage back, the DVLA paperwork, and how to challenge the insurer. https://obdcode.co.uk/guides/keeping-records-and-evidence/ https://obdcode.co.uk/guides/keeping-records-and-evidence/ Thu, 13 Aug 2026 00:00:00 +0000 2026-08-13 OBDCode UK editorial A practical checklist for UK drivers: the timeline, invoices, photographs and written confirmations to keep after a car repair goes wrong, and how long to hold on to them.