Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSACURA2001INTEGRA GS, 2D COUPE, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROLS - SELF-DIAGNOSTICSDIAGNOSTIC TESTSDTC P0300 SET WITH DTC P0301, P0302, P0303 OR P0304: RANDOM MISFIRE DETECTEDPOSSIBLE CAUSE
2001 Acura Integra GS, 2D Coupe, Standard
Possible Cause
2001 Acura Integra GS, 2D Coupe, StandardSECTION Possible Cause
DTC P0300 set with P0301, P0302, P0303 or P0304 indicates random misfire. To determine cause of misfire, check the following:
- Fuel pump insufficient fuel pressure/volume.
- Fuel pressure regulator stuck open.
- Fuel return line clogging.
- Fuel filter clogging.
- Distributor malfunction.
- Ignition coil wire open, or leaking.
- Ignition control module malfunction.
- Low compression.
- Poor fuel quality.
- VTEC system malfunction.
- H02S malfunction.
- H02S circuit malfunction.
- Carbon deposits on valves.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.