Your choice

Your privacy

Storage needed for the site. Visit and search statistics are optional and start only with your permission. Privacy policy

Skip to content
Back to list

OBD code information sheet

https://dvireports.com/p0300/audi

Fault codes DVI Reports
P0300Audi

Worn out spark plugs, ignition wires, coil(s), distributor cap and rotor (when applicable), Incorrect ignition timing, Vacuum leak(s), Low or weak fuel pressure, Improperly…

Safe to keep driving?Critical / Stop safelyStop safely immediatelyDo not continue driving until symptoms have been assessed.

Stop safely immediately, shut off the engine for low oil pressure or overheating warnings, and do not continue until the cause has been assessed. Arrange roadside assistance or recovery. Driving on may cause severe damage. If the check-engine light flashes or the engine shakes severely, reduce load and stop safely immediately. Persistent misfires can damage the catalytic converter. Do not continue until the cause has been assessed.

LowCautionCritical
System groupEngine & powertrain
Selected definitionAudi1 definitions availableChange

Choose the make reported by the scan tool or vehicle documentation. The same code can have different manufacturer meanings.

General catalogue definitionAudi

Technical explanation

Worn out spark plugs, ignition wires, coil(s), distributor cap and rotor (when applicable), Incorrect ignition timing, Vacuum leak(s), Low or weak fuel pressure, Improperly functioning EGR system, Defective Mass Air Flow Sensor, Defective Crankshaft and or Camshaft Sensor, Defective Throttle Position Sensor, Mechanical engine problems (i.e.—low compression, leaking head gasket(s), or valve problems). Source catalogue definition; confirm applicability using vehicle service information.

Check the fuses before ordering a part

An OBD code describes a detected condition; it does not tell you which part to replace. Start with the fuse for the affected circuit.

Find the fuse for your vehicleChoose the make and model, then look up the fuse position in the catalogue.

If the fuse is good, carry on like this:

  1. Check the relevant supplies and connectionsWhere the diagnostic procedure calls for electrical checks, verify supply, ground and connectors under the manufacturer’s activation conditions.
  2. Run the specified component testUse the manufacturer’s test for this code and component before deciding it has failed.
  3. Order only after the fault is demonstratedReplace a part only when the prescribed tests identify it as defective.
Check details
  • Identify the circuit and any relevant fuse: Confirm the vehicle, engine, code meaning and stored operating conditions first. A fuse link is a location aid, not evidence that the fuse caused this code. Use the specified type and rating; do not repeatedly replace a fuse that opens.
  • Check the relevant supplies and connections: Use the specified engine state, circuit conditions and expected values. Have live measurements performed by someone qualified. For non-electrical faults, follow the relevant mechanical, fluid, pressure or leak checks instead.
  • Run the specified component test: Do not apply a generic resistance range. Any resistance or continuity test requires a de-energized circuit and an isolated component, with the correct pins and temperature from the procedure. Some components need a different kind of test.
  • Order only after the fault is demonstrated: If results are normal, continue the relevant wiring, control, mechanical or intermittent diagnosis. Check for related faults and verify the repair under the required conditions. A code or a completed checklist alone does not justify replacement.
Fluke · Continuity testing

If the procedure involves airbag/SRS, pretensioners or a high-voltage system, stop DIY testing and use qualified service. Do not probe these circuits with a multimeter.

Fuses to check for this code

P0300 · Associations from the imported catalog

Confirm the model, year and engine. Associations come from the imported catalog; a code alone does not prove a blown fuse. Check machine-translated descriptions against the vehicle manual. Use the exact rating specified by the manufacturer when replacing a fuse.

7 / 854 associations found

  • Audi

    Audi A1

    1620 A
    Box / group
    Fuse Box in the driver’s side of the instrument panel
    Circuit / component
    Wiper motor switch-over relay 1 -J368-, up to October 2014Engine component current supply relay -J757-23)24)Ignition coil 1 with output stage -N70-23)24)Ignition coil 2 with output stage -N127-23)24)Ignition coil 3 with output stage -N291-23)24)Ignition coil 4 with output stage -N292-23)24)
    View fuse 16 in the table

  • Audi

    Audi A1 Gb 2019 2022

    SB620 A
    Box / group
    Engine Compartment Fuse Box (-SB-)
    Circuit / component
    Ignition coil 1~4 with output stage (1.0L, 1.5L petrol)
    View fuse SB6 in the table

  • Audi

    Audi A8 1994 2002

    420 A
    Box / group
    Engine Compartment Fuse Box
    Circuit / component
    ECM & Ignition Coil Terminal No. 15
    View fuse 4 in the table

  • Audi

    Audi A8 1994 2002

    3230 A
    Box / group
    Passenger Compartment Fuse Box
    Circuit / component
    ’00-’03: Fuel Injectors, Ignition Coils, Valves No. 1 & 2 for Camshaft Adjustment (’01-’03)
    View fuse 32 in the table

  • Audi

    Audi Q3 2011 2016

    24Not specified
    Box / group
    Engine compartment fuse assignment
    Circuit / component
    Ignition coils
    View fuse 24 in the table

5 / 7 associations shown

Find another model in the fuse catalog →

Vehicle experiences and cases

User-reported cases published after moderation. Approval does not verify the diagnosis; the same code can have different causes.

No experiences have been published for this definition yet. You can be the first to share the checks and outcome.

See all vehicle experiences

Manuals, components and vehicle guides

Find the relevant procedure in the workshop manual for your vehicle. A fault code alone does not identify a failed part, powertrain or exact schematic.

Find workshop manual / diagramRelated issues and checks

Manuals open at their original source. Exact diagram availability depends on the build year, engine and manufacturer access.

Can I fix it myself?

Once the cause is confirmed, open the job sheet: difficulty, time, tools, parts and steps. Common jobs for P0300:

Replace spark plugs →Replace ignition coil →

How to fix P0300: step-by-step guide

Symptoms, causes, visual inspection, scan-tool or multimeter tests, replacement and clearing the code, with safety warnings.

Misfires P0300–P0304: how to test ignition coils and spark plugs step by step →Why is there blue smoke from the exhaust? Causes and checks →White exhaust smoke: what it means and when it is serious →Why does the engine shake at idle? Causes and checks →Why does the car jerk when accelerating? Causes and checks →Diesel shaking at idle when cold: causes and checks →

Ignition circuit

General system guidance · not a confirmed diagnosis

Distinguish primary circuit, secondary circuit and cylinder combustion before replacing a coil.

The association is based on the imported description. This information explains the system; it does not confirm a procedure for the exact code, model or engine. Verify applicability in manufacturer documentation.

Manufacturer-specific definition: verify its meaning and subtype with a compatible tool before using this general guide.

Checks for this type of system

  1. Inspect the indicated plug, coil and connectors.
  2. Have supply and control checked in a workshop.

Useful diagnostic data, where available

  • Misfire counts where supported.
  • Command waveform captured with suitable instruments.

Normal values and thresholds vary by vehicle and are not assumed here.

Mistakes to avoid

  • Never test sparks near fuel.
  • Consider compression if ignition tests pass.
System-guide sources

References support general principles, not individual verification of every associated code.

Vehicle associations in the catalogue

Catalogue associations help searching and do not confirm code applicability for every model, year and engine combination. Check the vehicle service information.

Make

Audi

Continue your research

Links to related systems, warning lights and vehicle examples.

Misfires P0300–P0304: how to test ignition coils and spark plugs step by stepCheck Engine light: meaning and urgencyWhat does misfire mean?How a fuel injector worksP0300 on Volkswagen Golf VII 1.4 TSIP0300 on Škoda Octavia III 1.4 TSIP0300 on Opel Astra K 1.4 TurboRough idleHard startingRelated code P0301Related code P0302Read the code with an OBD scanner

Similar codes

P0301Caution / Repair soon

Manufacturer-specific: Audi

Worn out spark plugs, ignition wires, coil(s), distributor cap and rotor (when applicable), Incorrect ignition timing, Vacuum leak(s), Low or weak fuel pressure, Improperly…

Engine & powertrain

Open sheet
P0302Caution / Repair soon

Manufacturer-specific: Audi

Worn out spark plugs, ignition wires, coil(s), distributor cap and rotor (when applicable), Incorrect ignition timing, Vacuum leak(s), Low or weak fuel pressure, Improperly…

Engine & powertrain

Open sheet
P0303Caution / Repair soon

Manufacturer-specific: Audi

Worn out spark plugs, ignition wires, coil(s), distributor cap and rotor (when applicable), Incorrect ignition timing, Vacuum leak(s), Low or weak fuel pressure, Improperly…

Engine & powertrain

Open sheet
Report a problem

What should be corrected in this sheet? Do not include names, phone numbers, registration plates or VINs.

Free tool · OBD catalogue

Is this code showing on your vehicle?

See the code meaning and catalogue checks for free. Continue with contextual AI analysis on a PRO plan.

Observed symptoms (optional)

Interpret this code in context.

Describe symptoms, add up to 3 photos and scanner codes if available. Get AI guidance, a PDF and a link for your mechanic — RON 5 / USD 2 / EUR 2 / GBP 1 per case, no subscription.

Analyse with AI Mechanic · from $2 USD

Vehicle reportsFree: 5 reports a month

Want to send this diagnosis to your customer or keep it in a clean PDF with your logo?

Generate a complete report: OBD codes, findings, photos and recommendations, with your workshop details. You can import the codes straight from a photo of the scan tool.

  • Your logo and workshop details
  • Import codes from a photo
  • Photos and findings
  • 13 languages and the customer's currency
Add P0300 to a reportImport codes from a photoSee the template and included checks

5 free reports every month; try it straight away, no subscription.