Blog sections

The app itself: agents, architecture and what it can do for you.

• The 8 AI agents behind Car Diagnostics: how a specialized AI team explains your car fault
• How AI Explains Trouble Codes: 8 Agents Under the Hood

Traction batteries, EV-specific diagnostics and hybrid systems.

• Ford Kuga and Puma: wet belt, hybrid and the checks that matter
• Lexus RX and NX: premium Toyota hardware and the extra modules
• Peugeot 3008 and 5008: larger PSA cars and their diagnostics

Faults, quirks and code patterns specific to one manufacturer.

• Audi Q3 and A5: shared VAG hardware, specific complaints
• BMW B47 and B48: the modular generation and what it actually breaks
• BMW F30 3 Series: OBD diagnostics and the known weak points

What the letters mean, pending versus stored, and when clearing is wrong.

• Code aging: how a fault clears itself after 40 warm-up cycles
• P1xxx codes: why your scanner says "manufacturer specific" and what to do
• Two-trip logic: why the lamp waits before it warns you

P00xx to P03xx and P05xx: metering, injection, misfire and idle control.

• P0530 to P0533: A/C refrigerant pressure sensor circuit
• P0545 and P0546: exhaust gas temperature sensor circuit
• P0560 to P0563: system voltage malfunction, unstable and high

P04xx and P2xxx: catalyst, EVAP, EGR, DPF and oxygen sensor monitoring.

• P2004 to P2010: intake manifold runner control stuck and circuit faults
• P2016 and P2017: intake manifold runner position sensor
• P2031 to P2036: exhaust gas temperature sensor bank 1 sensor 2

P07xx and P08xx: solenoids, ratios, speed sensors and the converter clutch.

• P0703 and P0706: brake switch B and transmission range sensor
• P0710 to P0713: transmission fluid temperature sensor circuit
• P0716 and P0717: input/turbine speed sensor circuit and no signal

P06xx, U-codes, B-codes and C-codes: modules that stopped talking or self-testing.

• B0001 to B0100: airbag and restraint system codes explained
• C0035 to C0050: wheel speed sensor codes by corner
• C0051: steering wheel position sensor and the calibration it needs

Choosing hardware, connecting it, and reading what it gives you.

• The 60 ohm test: checking CAN bus termination with a multimeter
• ELM327 AT commands: the reference every owner eventually needs
• IUMPR: the ratio that proves your monitors actually run

Catalyst, DPF, EVAP, AdBlue and everything the emissions test looks at.

• Bang on lift-off: exhaust backfire and what it means
• Euro 7 and on-board monitoring: what changes for owners
• Exhaust smell inside the cabin: treat it as urgent

Misfires, idle, power loss, overheating, timing and turbo.

• Starts then dies within seconds: immobiliser, fuel or idle control
• Will not rev past 3000 rpm: limp mode with a specific cause
• Engine keeps running after you switch off: what causes run-on

Automatics, manuals, clutch, torque converter, differentials.

• Clutch judder from a standstill: what it is telling you
• Crunch on downshift: synchros, clutch drag or oil
• Humming that rises with speed: bearing, tyre or driveline

Anything between the body and the road.

• ABS light after a wheel change: what you disturbed
• Brake pedal sinks to the floor: stop driving and read this
• Car pulls under braking: caliper, hose or contamination

Charging, parasitic drain, modules, wiring and network faults.

• Automatic headlights stopped working: sensor or setting
• The battery monitoring sensor: the small box that decides your charging
• Boot or tailgate will not open: latch, switch or module

Air conditioning, heating, cabin air and interior niggles.

• Heater warm on one side only: blend door or airlock
• Hissing from the vents: blend door, refrigerant or a blocked drain
• Air conditioning: how to use it so it cools better and lasts longer

Pre-purchase checks, history, warranty, insurance and running costs.

• The EU Data Act and your car: who owns the data your vehicle generates
• The trip computer: how accurate are its numbers
• An insurance claim: the evidence gathered at the scene, not afterwards

Intervals, fluids, filters, wear items and preventive work.

• Digital service records: what the car stores and what it proves
• Roof bars: fitting, limits, and what changes on a journey
• A windscreen chip: repair or replace

Winter starts, summer heat, floods, mountains and long trips.

• Belt squeal on a cold start: tensioner, pulley or contamination
• Fuel flap stuck shut: the release you did not know about
• Washer pump silent: fuse, pump or a frozen line