Mobile auto electrics and fault finding
Dash lit up, something cutting out, or a fault that comes and goes? Eddie traces factory-fitted electrics where the car is parked.
- 4.9on Google from 67 reviews
- 38 yearsof experience
- IMICertified Automotive Engineer
- HEVRAlisted on the EV garage locator
Factory-fitted electrics
Warning lights and likely causes
Vauxhall specialist work, carried out at your home or workplace. Peugeot, Citroen, DS and Chevrolet are covered too, within the years on the diagnostics page.
| What you see | What it can come down to |
|---|---|
| Lots of warnings at once | Low battery voltage, or a CAN bus problem. See below. |
| Airbag light | Often a seat or under-seat connector, a clock spring, or a module fault. Always get it read, because the system may not deploy with a fault stored. |
| ABS light | A wheel speed sensor or its wiring, or the ABS pump and module. |
| TPMS light | A soft tyre first, so check pressures. After that, a tyre sensor or a system that needs relearning. |
| Features dropping out | A body or door module, a broken wire in a flexing section, or water in a connector. |
Fault finding
Intermittent and network faults
Intermittent faults
A fault that clears itself before the car reaches a garage gives nobody anything to measure. It may be a pin that has lost its grip, a wire broken inside the insulation, or a joint that opens up when it warms. Stored data can show what happened at the moment it logged. Wiggling the loom while watching live data can bring it back on demand.
You can help. Write down when it happens and take a photo of the dash. Does it follow rain, a pothole, a cold start, or the tailgate opening? That detail can save hours.
CAN bus
Modern cars run on data networks, and the modules all talk over a shared pair of wires. If one module or one section of wire misbehaves, others can lose contact and raise warnings for parts that are fine. A handful of lights all at once can be one fault. Codes starting with U point this way, such as U0100, lost communication with ECM/PCM. A weak battery can produce similar nonsense, so voltage gets checked early.
Connectors and looms
Wiring tends to fail where it moves or gets hot: door and tailgate hinges, around the engine, and anywhere it rubs on a bracket. The pictures below come from Eddie's Facebook page.
Water
Water damage
Water getting into connectors is a common cause. There's a real example on the blog.
Got a damp carpet and odd warnings together? Mention both when you ring.
Amazing service and knowledge. My car was having a right old hissy fit, all manner of service lights had come on, dash was coming on and going off. Eddie track the issue to a rear tailgate module which was found to be full of water. The module was removed, this resolved the issues, Eddie then proceeded to trace the water ingress filling and sealing any potential inlets…
After other garages
What customers say
Can’t recommend Eddie highly enough. After trying 3 garages with no luck in fixing an electrical problem with my van I almost gave up, but luckily I came across Eddies website, and thank god I did…
Tip-top service from Eddie, who fixed a longstanding electrical problem with my car, after two garages wrongly diagnosed it as a more complicated and expensive repair. Eddie arrived as promised and sorted it super fast.
A warning that points at the engine computer? Read about ECU faults. Run a garage yourself? See support for garages and bodyshops.
Questions
Auto electrics FAQ
What electrical work does Eddie do?
Electrical and diagnostic work on Vauxhall, Chevrolet, Peugeot, Citroen and DS, on anything factory installed.
Do you fit dash cams or infotainment?
No. Aftermarket products such as dash cams and infotainment systems are not covered.
Can you find a fault that keeps coming and going?
Often, and it helps a great deal if you can say when it happens. Note the weather, the speed, whether the engine was hot or cold, and photograph the dash when the fault is showing.
My garage says it's a wiring fault. Is that something you look at?
Yes, factory wiring faults are part of Eddie's work. Ring with the reg and tell Eddie what the garage has already checked, so nothing gets tested twice.
Mon to Fri, 08:30 to 17:30