AutoCodes – Mitsubishi – P0305 Mitsubishi

P0305 Mitsubishi Code - Cylinder 5 Misfire Condition

Quick Answer

When a misfire occurs, engine speed will fluctuate. Common causes include Faulty spark plug 5, Clogged or faulty fuel injector 5, Faulty ignition coil 5. 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
P0305 Mitsubishi indicates Cylinder 5 Misfire Condition.
Common causes
Common causes include Faulty spark plug 5, Clogged or faulty fuel injector 5, Faulty ignition coil 5.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 17,060
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code P0305 Mitsubishi Description

When a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates enough to cause the Crankshaft Position (CKP) sensor signal to vary, the Engine Control Module (ECM) can determine that a misfire is occurring.
OBDII Code P0305 Mitsubishi - Cylinder 5 Misfire Condition - AutoCodes.com
P0305 Mitsubishi Code - Cylinder 5 Misfire Condition

What are the Possible Causes of the DTC P0305 Mitsubishi?

  • Faulty spark plug 5
  • Clogged or faulty fuel injector 5
  • Faulty ignition coil 5
  • Fuel injector 5 harness is open or shorted
  • Fuel injector 5 circuit poor electrical connection
  • Ignition coil 5 harness is open or shorted
  • Ignition coil 5 circuit poor electrical connection
  • Insufficient cylinder 5 compression
  • Incorrect fuel pressure
  • Intake air leak

How to Fix the DTC P0305 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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0305 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.

Need more information about the P0305 Mitsubishi code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0305 Mitsubishi Code

1. What are common symptoms of OBDII code P0305 (Cylinder 5 Misfire Condition) in a Mitsubishi?

- Common symptoms include rough idling, engine misfires, loss of power, and potential engine vibrations.

2. What are the possible causes of a Cylinder 5 misfire in a Mitsubishi triggering the P0305 code?

- The misfire could be caused by a faulty ignition coil, spark plug, fuel injector, vacuum leak, low compression in the cylinder, or a problem with the engine control module.

3. How can I diagnose the source of the Cylinder 5 misfire in my Mitsubishi when experiencing the P0305 code?

- Diagnostic steps may involve checking the ignition system components, inspecting the spark plug condition, testing the fuel injector, performing a compression test, and scanning for other trouble codes.

4. Can driving with an unresolved P0305 code in a Mitsubishi cause further damage to the engine?

- Continuing to drive with a misfire condition can potentially lead to damage to the catalytic converter, increased fuel consumption, and overall decreased engine performance.

5. What are some basic repair tips for addressing the Cylinder 5 misfire in a Mitsubishi with the P0305 code?

- Start by checking and replacing the spark plugs and ignition coils, inspecting the fuel injector, verifying proper fuel pressure, and ensuring there are no vacuum leaks.

6. How crucial is it to address the P0305 code promptly in a Mitsubishi to prevent further issues?

- It is important to address the Cylinder 5 misfire promptly to prevent potential damage to the engine components, ensure optimal performance, and avoid more costly repairs down the line.

7. Is it possible to reset the OBDII code P0305 in a Mitsubishi without addressing the underlying misfire issue?

- While you can clear the code, the check engine light is likely to come back on if the misfire problem is not resolved, indicating that the issue persists.

8. Can a DIY enthusiast with basic automotive knowledge attempt to fix the Cylinder 5 misfire causing the P0305 code in a Mitsubishi?

- Depending on the root cause, DIY enthusiasts can address some issues like replacing spark plugs or ignition coils, but more complex problems may require professional diagnosis and repair.

9. How much can I expect to pay for repairs related to the P0305 Cylinder 5 misfire code in a Mitsubishi?

- Repair costs can vary based on the cause of the misfire, but expenses may include parts like spark plugs or ignition coils, labor charges, and potentially diagnostic fees.

10. Are there any preventive maintenance measures that can help reduce the likelihood of experiencing the P0305 code in a Mitsubishi?

- Regularly scheduled maintenance, such as changing spark plugs at recommended intervals, using high-quality fuel, and addressing any engine performance issues promptly, can help prevent misfire conditions triggering the P0305 code.

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