P1303 Code - Cylinder Number 3 Random Misfire Detected
Quick Answer
P1303 indicates Cylinder Number 3 Random Misfire Detected. Common causes include Check primary and secondary ignition, Check fuel system-Fuel pressure and injector, Check for vacuum leaks. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
- What it means
- P1303 indicates Cylinder Number 3 Random Misfire Detected.
- Common causes
- Common causes include Check primary and secondary ignition, Check fuel system-Fuel pressure and injector, Check for vacuum leaks.
- Severity
- Moderate - service should be scheduled soon.
- Can I drive?
- The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
Code P1303 Description
What are the Possible Causes of the DTC P1303?
- Check primary and secondary ignition
- Check fuel system-Fuel pressure and injector
- Check for vacuum leaks
- Check engine mechanical condition
- Faulty Spark Voltage Detection Module
How to Fix the DTC P1303?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1303 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the P1303 code?
Need more information on how to fix the P1303 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1303 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- P1303 Acura — Cylinder Number 3 Random Misfire Detected
- P1303 BMW — Misfiring Cylinder 3
- P1303 Ford — EGR Calibration Fault
- P1303 Honda — Cylinder Number 3 Random Misfire Detected
- P1303 Hyundai — TDC Sensor High Input
- P1303 MINI — Misfiring Cylinder 3
- P1303 Mitsubishi — Misfiring Cylinder 3
- P1303 Saab — Cylinder 3 Misfiring Detected
Frequently Asked Questions about P1303 Code
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