P1303 Mitsubishi Code - Misfiring Cylinder 3
Quick Answer
P1303 Mitsubishi indicates Misfiring Cylinder 3. Common causes include Faulty Spark Plug #3, Faulty Ignition Coil 3, Ignition Coil 3 harness is open or shorted. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1303 Mitsubishi indicates Misfiring Cylinder 3.
- Common causes
- Common causes include Faulty Spark Plug #3, Faulty Ignition Coil 3, Ignition Coil 3 harness is open or shorted.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P1303 Mitsubishi Description
What are the Possible Causes of the DTC P1303 Mitsubishi?
- Faulty Spark Plug #3
- Faulty Ignition Coil 3
- Ignition Coil 3 harness is open or shorted
- Ignition Coil 3 circuit poor electrical connection
How to Fix the DTC P1303 Mitsubishi?
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 Mitsubishi 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.
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Frequently Asked Questions about P1303 Mitsubishi Code
1. What does the OBDII code P1303 indicate on a Mitsubishi?
Code P1303 indicates a specific issue with misfiring detected in Cylinder 3. This means the engine control module (ECM) has detected that cylinder 3 is not firing properly, which can affect the engine's performance and efficiency.
2. What are common symptoms of the P1303 code in a Mitsubishi?
Symptoms may include a rough running engine, reduced fuel efficiency, the engine light on the dashboard illuminating, and in some cases, noticeable lack of power or stalling.
3. What causes a P1303 code to appear on a Mitsubishi?
The P1303 code can be triggered by various issues, including faulty spark plugs, defective ignition coils, improper fuel injection, or low compression in cylinder 3.
4. How can I fix the P1303 Mitsubishi code?
To fix this code, you should start by checking and replacing the spark plugs and ignition coils if necessary. Also, inspect the fuel injector for proper operation and ensure there are no compression issues in cylinder 3. These steps typically resolve the problem.
5. Is it safe to drive a Mitsubishi with a P1303 code?
Driving with a misfire code, such as P1303, is not recommended as it can lead to further engine damage, decreased performance, and potentially unsafe driving conditions due to power loss.
6. How do I diagnose the cause of a P1303 code in a Mitsubishi?
Begin by using an OBDII scanner to confirm the code. Check for other related diagnostic trouble codes that might give clues about the underlying issue. Inspect the spark plugs, ignition coils, and fuel injector in cylinder 3. Also, conduct a compression test to rule out mechanical issues like a blown head gasket or bent valves.
7. Can a P1303 code affect the fuel economy of my Mitsubishi?
Yes, a misfire in any cylinder, including cylinder 3 denoted by code P1303, can lead to increased fuel consumption and reduced overall engine efficiency.
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