AutoCodes – Mitsubishi – P1863 Mitsubishi

P1863 Mitsubishi Code - High Side 1 System Open Circuit

Quick Answer

The Twin Clutch Sportronic Shift Transmission (TC-SST) Electronic Control Unit (ECU) monitors the system and the supply current to the high side 1 is determined to be open. Common causes include Faulty Twin Clutch Sportronic Shift Transmission (TC-SST) Electronic Control Unit (ECU), TC-SST-ECU harness is open or shorted, TC-SST-ECU circuit poor electrical connection. 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: P1863 Mitsubishi indicates High Side 1 System Open Circuit.
Common causes: Common causes include Faulty Twin Clutch Sportronic Shift Transmission (TC-SST) Electronic Control Unit (ECU), TC-SST-ECU harness is open or shorted, TC-SST-ECU circuit poor electrical connection.
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.

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Code Popularity 1,236

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jan 31, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1863 Mitsubishi Description

The Twin Clutch Sportronic Shift Transmission (TC-SST) Electronic Control Unit (ECU) monitors the system and the supply current to the high side 1 is determined to be open.

OBDII Code P1863 Mitsubishi - High Side 1 System Open Circuit - AutoCodes.com — P1863 Mitsubishi Code - High Side 1 System Open Circuit

What does this mean?

What are the Possible Causes of the DTC P1863 Mitsubishi?

Faulty Twin Clutch Sportronic Shift Transmission (TC-SST) Electronic Control Unit (ECU)
TC-SST-ECU harness is open or shorted
TC-SST-ECU circuit poor electrical connection

How to Fix the DTC P1863 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 P1863 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 P1863 Mitsubishi code?

Need more information on how to fix the P1863 Mitsubishi code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1863 Mitsubishi code diagnosed by a professional: Find a repair shop in your area

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 P1863 Mitsubishi Code

1. What are the common symptoms of OBDII code P1863 in a Mitsubishi related to the High Side 1 System Open Circuit?

- Common symptoms may include rough idling, poor engine performance, and potential stalling.

2. What could cause the High Side 1 System Open Circuit in a Mitsubishi triggering code P1863?

- The code P1863 in a Mitsubishi is typically caused by a damaged wiring harness, faulty high-pressure fuel pump, or a malfunctioning fuel pressure sensor.

3. How can I diagnose the High Side 1 System Open Circuit issue causing OBDII code P1863 in my Mitsubishi?

- To diagnose the issue, it is recommended to visually inspect the wiring harness, test the high-pressure fuel pump, and check the fuel pressure sensor for proper functioning.

4. Can I continue driving my Mitsubishi with OBDII code P1863 related to the High Side 1 System Open Circuit?

- It is not advisable to continue driving your Mitsubishi with this code active, as it can lead to further damage to the engine components.

5. Are there any DIY repair tips for fixing the High Side 1 System Open Circuit issue triggering code P1863 in a Mitsubishi?

- DIY repair tips may include checking and repairing any damaged wiring, replacing the high-pressure fuel pump if necessary, and ensuring proper connection of the fuel pressure sensor.

6. How much does it typically cost to repair the High Side 1 System Open Circuit issue causing OBDII code P1863 in a Mitsubishi?

- The cost of repair can vary depending on the extent of the damage and the parts needed, but it may range from a few hundred to a thousand dollars.

7. Can a mechanic reset the OBDII code P1863 related to the High Side 1 System Open Circuit after repairs are done?

- Yes, a mechanic can reset the code using an OBDII scanner after the necessary repairs have been completed.

8. Will the OBDII code P1863 related to the High Side 1 System Open Circuit disappear on its own without any repairs?

- The code is unlikely to disappear on its own without addressing the underlying issue causing the High Side 1 System Open Circuit in the Mitsubishi.

9. Is it possible for a loose gas cap to trigger OBDII code P1863 in a Mitsubishi?

- No, a loose gas cap typically triggers a different set of codes related to the evaporative emissions system, not the High Side 1 System Open Circuit.

10. Can extreme weather conditions or environmental factors cause OBDII code P1863 in a Mitsubishi related to the High Side 1 System Open Circuit?

- While extreme weather conditions may not directly cause this code, they can exacerbate existing issues with the fuel system components, leading to the triggering of code P1863.