Workshop · diagnostics and repairsWe reply the same day

OBD-II1967 fault codes in plain English

Engine light on?

Enter a fault code or your car's symptoms and see right away what may be wrong, whether it's safe to drive, and an estimated repair cost.

See all 1967 codes

Most common fault codes

All codes
CodeMeaningSystemTypical repairSafe to drive?
P0420Catalytic converter no longer cleaning properlyCatalytic converter€100–1500OK to drive
P0300Misfires in several cylindersIgnition and misfires€40–600Don't drive
P0171Mixture too leanFuel mixture€50–500Get it checked soon
P0401Too little gas flowing through the EGR valveEGR valve€80–600OK to drive
P0299Turbo boost pressure too lowTurbo and boost pressure€80–1800Get it checked soon
P0128Engine stays too cold (thermostat)Cooling€80–300OK to drive
P0455Large leak in the fuel vapour systemTank venting and fuel vapours€10–300OK to drive
P2002Particulate filter not cleaning properlyDiesel particulate filter (DPF)€80–1500Get it checked soon
P0101Mass air flow sensor reads wrongFuel and air€60–300Get it checked soon
P0335No signal from the crankshaft sensorEngine sensors and timing chain€60–300Don't drive
P0700Fault in the gearboxAutomatic gearbox€100–2500Get it checked soon
P0562Battery voltage too lowBattery, charging and glow plugs€30–500Get it checked soon

Help and guides

Book a diagnostic check

Bring your car to our workshop in Estonia. We read the fault codes and tell you what's wrong. Repair price depends on the work involved, generally €45 per hour.

Diagnostics are done in Haapsalu, Estonia

  • Fault codes from every control module
  • Live sensor data and a test drive
  • We reply the same day, in English too
Contact us

Leave a phone number or email so we can get back to you.

Diagnostics are done in Haapsalu, Estonia

Questions

Where do I get the fault code?

The diagnostic port is usually under the steering wheel. A Bluetooth code reader costs €15–40 and works with your phone. Or bring the car to us and we'll read the codes for you.

Does the engine light mean I can't drive?

If the yellow light is simply on, you can usually keep driving calmly and have the car checked soon. If the light is flashing, the engine is misfiring. Then drive slowly and stop the car as soon as you safely can.

Can I just clear the code?

You can clear it, but that doesn't fix the fault. The code will soon come back, and the annual inspection can see when codes were recently cleared.

How accurate is this information?

The code meanings are standard. Causes and prices come from our workshop experience. Based on AI combined with our hands-on workshop experience and knowledge. The same code can mean different things on different cars, so only an inspection of the car gives a definite answer.

Do you speak English?

Yes. Write to us or book in English and we'll reply in English. Repair price depends on the work involved, generally €45 per hour.

Does the search cost anything?

Search is free. Repair price depends on the work involved, generally €45 per hour.

For workshops and parts shops: advertise on DiagnoGuaranteed impressions, 1 partner per category. Recommended workshop from €49/month
Book a diagnostic check