Car Diagnostics in London

A diagnostic check can include scanning the vehicle’s control modules, reading fault codes, checking live data, testing electrical feeds, grounds, sensors, wiring and communication networks, then using the results to identify the likely cause of the fault.

Not always. A diagnostic machine gives direction, but it does not always confirm the failed part. Fault codes need to be tested properly, because the real issue could be wiring, low voltage, a sensor, a control module, a fuse, a relay or another related system.

P codes are powertrain fault codes, usually linked to the engine, gearbox, emissions, fuel system, sensors or related wiring. Common examples include oxygen sensor faults, misfire codes, boost faults, EGR faults, DPF issues and throttle-related faults.

The engine management light can come on because of sensor faults, wiring issues, emissions faults, misfires, low battery voltage, fuel system problems, turbo or boost issues, DPF faults or control module problems. If the light returns after clearing, the fault still needs diagnosing.

Yes. Airbag faults can be caused by seat wiring, seat belt pretensioners, crash sensors, clocksprings, low voltage, impact data, control module faults or wiring damage. Airbag systems should be diagnosed properly because they are safety-related.

Yes. ABS and traction control faults are commonly linked to wheel speed sensors, reluctor rings, wiring, ABS pumps, steering angle sensors, brake switches or module communication issues. A scan plus live data testing helps narrow down the real cause.

Yes. No-start diagnostics can include checking the battery, starter motor, immobiliser, fuel system, crankshaft sensor, camshaft sensor, fuses, relays, ECU power supplies, earth points and communication with the engine control module.

Yes. SP88 works with car electrical faults including wiring issues, battery drains, blown fuses, non-working lights, window faults, central locking problems, module faults, sensor faults, charging faults and communication faults between control units.

A battery drain can be caused by a weak battery, a module staying awake, aftermarket equipment, interior lights, boot lights, alarm issues, faulty relays, infotainment faults or wiring problems. Proper drain testing may be needed to find what is staying live.

Yes. Parking sensor faults can be caused by failed sensors, damaged wiring, water ingress, bumper damage, control module faults or coding issues. Diagnostics can help identify whether the problem is one sensor, the wiring or the parking aid system itself.

Yes. Reversing camera faults can involve the camera, power supply, ground, video signal, screen, coding, reverse trigger, control module or damaged wiring. These faults often need both electrical testing and system checks.

Yes. Screen and infotainment faults can be caused by low voltage, software issues, blown fuses, wiring faults, failed screens, faulty head units, MOST fibre optic faults, CAN communication issues or problems after aftermarket equipment has been fitted.

Yes. Dashboard messages such as “Stop Start Unavailable”, “Check Injection”, “Parking Aid Fault”, “Airbag Fault”, “ABS Fault” or “Battery Charging Fault” normally need a diagnostic scan and further testing to confirm the cause.

Yes. Charging faults can involve the alternator, battery, smart charging system, wiring, fuses, belt drive, battery sensor or engine control module command. Testing is needed before replacing the alternator unnecessarily.

Yes. A starter fault may be caused by the starter motor, battery, ignition switch, relay, immobiliser, wiring, engine earth strap or control module command. A proper test helps confirm whether the starter itself is actually faulty.

Yes. Body electrical faults can include door modules, broken wiring in door looms, switches, motors, fuses, relays, coding issues and control module faults. These systems often need live data and circuit testing.

Yes. After an accident, vehicles may have airbag faults, crash data, damaged wiring, blown safety fuses, parking sensor faults, camera faults, battery safety terminal issues or module communication problems. These need careful checking before parts are replaced.

Yes. Communication faults can stop modules from talking to each other and may cause multiple warning lights or no-start problems. Testing may involve checking module power, grounds, CAN wiring, resistance, fuses and network activity.

Yes. Emissions faults can include DPF warnings, AdBlue faults, NOx sensor faults, EGR issues, exhaust temperature sensor faults and pressure sensor problems. Fault codes help guide the test, but the system still needs checking properly.

Yes, fault codes can be cleared where suitable. However, if the fault is still present, the warning light or code will usually return. Clearing codes is not the same as fixing the cause.

Basic checks may take 30 to 60 minutes, but complex electrical faults, intermittent faults, battery drains, module communication faults and no-start issues can take longer and may need further testing.

Yes. SP88 provides mobile car diagnostics across London and surrounding South London areas, including visits to your home, workplace or roadside where suitable.

You can book online through SP88 and choose the most suitable diagnostic service. Try to include the warning light, fault message, vehicle registration, symptoms and anything that happened before the fault started.