B1387 Code - Oil Temperature Sensor Circuit Open
Quick Answer
The Powertrain Control Module (PCM) monitors the Oil Temperature Sensor. Common causes include Faulty Oil Temperature Sensor, Oil Temperature Sensor harness is open or shorted, Oil Temperature Sensor 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
- B1387 indicates Oil Temperature Sensor Circuit Open.
- Common causes
- Common causes include Faulty Oil Temperature Sensor, Oil Temperature Sensor harness is open or shorted, Oil Temperature Sensor 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 B1387 Description
What are the Possible Causes of the DTC B1387?
- Faulty Oil Temperature Sensor
- Oil Temperature Sensor harness is open or shorted
- Oil Temperature Sensor circuit poor electrical connection
- Faulty Powertrain Control Module (PCM)
How to Fix the DTC B1387?
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 B1387 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 B1387 code?
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Need Help with the Code?
Get the B1387 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- B1387 Hyundai — Driver Seat Track Position Sensor Short Or Short To Ground
- B1387 KIA — Driver Seat Track Position Sensor Short Or Short To Ground
Frequently Asked Questions about B1387 Code
1. What are the common symptoms of OBDII code B1387 (Oil Temperature Sensor Circuit Open)?
The common symptoms include issues with the oil temperature gauge reading inaccurately or not working at all, along with potential warning lights on the dashboard.
2. What causes OBDII code B1387 (Oil Temperature Sensor Circuit Open) to occur?
The code is typically triggered by a malfunction in the oil temperature sensor circuit, which can be caused by a faulty sensor, damaged wiring, or poor connections.
3. How can I diagnose OBDII code B1387 (Oil Temperature Sensor Circuit Open)?
Diagnosing this code involves using a scan tool to retrieve the code, checking the oil temperature sensor and its wiring for any visible damage, and testing the sensor's resistance.
4. Is it safe to drive with OBDII code B1387 (Oil Temperature Sensor Circuit Open) active?
It is generally safe to drive with this code, but it is recommended to address the issue promptly to ensure accurate monitoring of oil temperature for optimal engine performance.
5. Can I repair OBDII code B1387 (Oil Temperature Sensor Circuit Open) myself?
Depending on your comfort level with automotive repairs, you may be able to repair this issue yourself by replacing the oil temperature sensor or repairing any damaged wiring or connections.
6. How much does it cost to fix OBDII code B1387 (Oil Temperature Sensor Circuit Open) at a mechanic?
The cost of fixing this code at a mechanic can vary depending on the labor rates and parts needed, but it is usually a relatively affordable repair compared to other automotive issues.
7. Will resetting the OBDII codes make OBDII code B1387 (Oil Temperature Sensor Circuit Open) disappear?
Resetting the OBDII codes may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear after driving the vehicle for a certain period.
8. Can a faulty oil temperature sensor cause other problems in the vehicle?
While a faulty oil temperature sensor may not directly cause major issues, it can affect engine performance and fuel efficiency if not functioning properly, leading to potential long-term damage if left unresolved.
9. How do I know if the oil temperature sensor needs to be replaced?
If the oil temperature gauge is not working, or if diagnostic tests reveal a fault in the oil temperature sensor circuit, it is likely that the sensor needs to be replaced to resolve the issue.
10. Are there any preventive measures to avoid OBDII code B1387 (Oil Temperature Sensor Circuit Open)?
To prevent this code from occurring, it is advisable to perform regular maintenance checks on the oil temperature sensor and its wiring, ensuring they are in good condition and free from damage.
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