DTC Diagnostics
A warning light or fault code should be understood before parts are replaced or performance work is carried out. JBJ provides mobile DTC diagnostics across Chester, Wrexham, Flintshire and North Wales.
Read and identify fault codes
We can scan compatible vehicle systems for diagnostic trouble codes and use the results as a starting point for fault investigation.
Diagnostics before tuning
Existing faults can affect how a vehicle drives and may make tuning inappropriate until the issue is resolved. A diagnostic check can help establish whether further investigation is needed first.
Clear next steps
Where possible, we explain what the detected codes relate to and whether the next step is repair, further testing or a tuning-related service.
What to send for a quote
- Vehicle registration
- Make and model
- Service required
- Your town or postcode area
Contact JBJ for a vehicle-specific quote. Pricing depends on the vehicle and the work required.
Send us your vehicle details
We’ll check compatibility and confirm the available options before booking.
Services & local coverage
Clear, upfront prices
Prices are starting prices for compatible vehicles. Final price and availability confirmed after vehicle and ECU/TCU checks. Referral offer: £20 off an eligible remap when referred by an existing JBJ customer (subject to verification). Klarna available on eligible work, subject to approval and terms.
Check your vehicle & book