Verified EV diagnostic knowledge page

Mitsubishi P0300

13-002REV ECM Reprogramming for MIL Illumination, DTC P0145 (Revised) 2011 Lancer, Lancer Sportback, Outlander Sport Provides instructions to reprogram vehicles with P0145 stored i

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence.
ServiceQualified service should be contacted if the warning persists, returns after a normal manufacturer-permitted restart, or affects driving or charging.
Confidence95%

Quick answer

Mitsubishi P0300: 13-002REV ECM Reprogramming for MIL Illumination, DTC P0145 (Revised) 2011 Lancer, Lancer Sportback, Outlander Sport Provides instructions to reprogram vehicles with P0145 stored i

This page separates verified manufacturer/regulator evidence from supporting material. Unsupported causes, repairs or safety conclusions are not guessed.

Video guides

Watch Videos

Relevant videos play here without leaving this diagnostic page.

DTC Mitsubishi P0300 Short ExplanationMaxidot Fiat

Videos are supporting material and never override OEM or regulator evidence.

1. What does Mitsubishi P0300 mean?

Mitsubishi P0300: 13-002REV ECM Reprogramming for MIL Illumination, DTC P0145 (Revised) 2011 Lancer, Lancer Sportback, Outlander Sport Provides instructions to reprogram vehicles with P0145 stored i

2. Technical explanation

The identity of P0300 is verified for Mitsubishi. Available evidence does not yet establish a narrower subsystem or component-level failure.

3. What system is affected?

Not yet established by verified evidence.

4. How serious is this code?

Not yet established by verified evidence. Urgency must be based on the exact vehicle warning and official guidance.

5. Mitsubishi P0300 symptoms you may notice

Not yet established by verified evidence.

6. Possible causes of Mitsubishi P0300

Not yet established by verified evidence. A diagnostic identifier alone is not proof that a specific component has failed.

7. Can I drive with Mitsubishi P0300?

Not yet established by verified evidence.

8. Can I charge with Mitsubishi P0300?

Not yet established by verified evidence.

9. What you can safely do

  • Preserve the exact diagnostic code and any accompanying vehicle warning before clearing anything.
  • Follow the manufacturer instructions shown in the vehicle or owner/service documentation.
  • Do not open or work on high-voltage components unless you are qualified and equipped for high-voltage service.

10. How to troubleshoot Mitsubishi P0300

  1. Record the exact code, warning text, vehicle model, model year, and operating condition when it appeared.
  2. Check the verified manufacturer or regulator source linked on this page for code-specific instructions.
  3. Avoid replacing parts based only on the code; code-specific component tests are not inferred when evidence does not provide them.
  4. Escalate to qualified service when the warning persists, affects driving/charging, or manufacturer guidance requires service.

11. When to contact service

Qualified service should be contacted if the warning persists, returns after a normal manufacturer-permitted restart, or affects driving or charging.

12. What the service center may check

Not yet established by verified evidence.

13. Possible repair or resolution for Mitsubishi P0300

Not yet established by verified evidence.

14. Affected vehicles

Not yet established by verified evidence.

15. Related TSBs / service bulletins

  • NHTSA: NHTSA Manufacturer Communication PDF 10170103: TT198
  • NHTSA: NHTSA Manufacturer Communication PDF 10170102: TT197

16. Recall information

No recall relationship is established by verified evidence.

17. Official manufacturer information

014 Outlander. TSB-13-11-005 Piston Oil Ring Installation-SMR 2006 Lancer Evolution Revises piston oil ring installation steps. TSB-13-11-006 Timing Belt Removal and Installation-SMR 2007-14 Outlander V6 Revises Service Points of Remov­ al/Installation of timing belt. TSB-13-13-001REVII ECM Reprogramming for MIL Illumination - Mis-detection of DTC P0300 -Second Revision 2011­13 Outlander, Lancer, Lancer Sportback, Outlander Sport Revises TSB-13-13-001REV with additional affected vehicles and updates MUT-III Standalone software information. TSB-13-13-002REVII ECM Reprogramming for MIL Illumination - Mis-detection of DTC P0145 -Second Revision 2010 Outlander, 2011 Lancer, Lancer Sportback, Outlande

19. Mitsubishi P0300 frequently asked questions

What does P0300 mean?

Mitsubishi P0300: 13-002REV ECM Reprogramming for MIL Illumination, DTC P0145 (Revised) 2011 Lancer, Lancer Sportback, Outlander Sport Provides instructions to reprogram vehicles with P0145 stored i

Can I drive with P0300?

Not yet established by verified evidence.

Can I charge with P0300?

Not yet established by verified evidence.

Does P0300 require service?

Qualified service should be contacted if the warning persists, returns after a normal manufacturer-permitted restart, or affects driving or charging.

20. Sources & verification

ReferenceVerified