P186E Code - High Side 2 System Voltage Low Range Out
Quick Answer
The Twin Clutch Sportronic Shift Transmission (TC-SST) Electronic Control Unit (ECU) monitors the system and the voltage of the high side 2 circuit is determined to be too low. 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
- P186E indicates High Side 2 System Voltage Low Range Out.
- 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.
Code P186E Description
What are the Possible Causes of the DTC P186E?
- 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 P186E?
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 P186E 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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Information for Specific Makes
- P186E Mitsubishi — High Side 2 System Voltage Low Range Out
Frequently Asked Questions about P186E Code
1. What does the OBDII code P186E mean?
P186E indicates that the High Side 2 system voltage is outside the expected range and is reading too low, typically pointing to an electrical issue.
2. What are the common symptoms of a P186E code?
Symptoms may include a check engine light, reduced vehicle performance, erratic shifting, or issues with electronic components relying on the high-side system.
3. What causes the P186E code to appear?
Common causes include a faulty voltage regulator, damaged wiring or connectors, a failing alternator, or a malfunctioning control module.
4. Can I drive with the P186E code active?
Driving with this code may lead to further electrical issues or reduced performance, so it’s best to address the problem as soon as possible.
5. How do I diagnose the P186E code?
Diagnose the code by inspecting the wiring and connectors for damage, testing the voltage at the affected circuit, and using a multimeter to check the alternator and control module.
6. How can I fix the P186E code?
Repairs may include replacing damaged wiring, repairing or replacing connectors, addressing alternator issues, or reprogramming or replacing the control module if necessary.
7. Can a dead battery cause the P186E code?
Yes, a weak or dead battery can cause low voltage issues, potentially triggering the P186E code.
8. Is the P186E code specific to certain vehicles?
While the P186E code is more common in vehicles with advanced electrical systems, it can appear in various makes and models depending on their diagnostic protocols.
9. How much does it cost to fix the P186E code?
Repair costs will vary depending on the root cause, but they can range from $50 for a wiring repair to several hundred dollars for module replacement or alternator repairs.
10. Can the P186E code clear itself?
The code may clear temporarily if the issue is intermittent, but the underlying problem will likely cause it to return until properly addressed.
Discuss the causes and fixes for P186E OBDII Code
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