P1139 MINI Code - O2 Sensor Heater Circuit High Voltage Bank 1 Sensor 2
Quick Answer
P1139 MINI indicates O2 Sensor Heater Circuit High Voltage Bank 1 Sensor 2. Common causes include Faulty HO2S Bank 1 Sensor 2, HO2S Bank 1 Sensor 2 harness is open or shorted, HO2S Bank 1 Sensor 2 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
- P1139 MINI indicates O2 Sensor Heater Circuit High Voltage Bank 1 Sensor 2.
- Common causes
- Common causes include Faulty HO2S Bank 1 Sensor 2, HO2S Bank 1 Sensor 2 harness is open or shorted, HO2S Bank 1 Sensor 2 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 P1139 MINI Description
What are the Possible Causes of the DTC P1139 MINI?
- Faulty HO2S Bank 1 Sensor 2
- HO2S Bank 1 Sensor 2 harness is open or shorted
- HO2S Bank 1 Sensor 2 circuit poor electrical connection
How to Fix the DTC P1139 MINI?
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 P1139 MINI 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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Frequently Asked Questions about P1139 MINI Code
1. What are the common symptoms of OBDII code P1139 in a MINI Cooper?
- Common symptoms include decreased fuel efficiency, rough idling, and the illumination of the check engine light.
2. What does the O2 Sensor Heater Circuit High Voltage Bank 1 Sensor 2 code mean for a MINI vehicle?
- This code indicates that there is a high voltage condition in the O2 sensor heater circuit of the second oxygen sensor in bank 1 of the vehicle.
3. What are the possible causes of OBDII code P1139 in a MINI Cooper?
- Potential causes include a faulty oxygen sensor, damaged wiring or connectors in the heater circuit, or a malfunctioning powertrain control module (PCM).
4. How can I diagnose the O2 Sensor Heater Circuit High Voltage issue in my MINI?
- Diagnosing this issue typically involves checking the oxygen sensor wiring, connectors, and the sensor itself using a multimeter and a diagnostic scanner.
5. Can driving with OBDII code P1139 cause further damage to my MINI Cooper?
- Continuing to drive with this code may lead to decreased fuel efficiency and potential damage to the catalytic converter over time.
6. Is it safe to continue driving my MINI with the check engine light on due to code P1139?
- While the vehicle may still be operable, it is recommended to address the underlying issue promptly to prevent any potential long-term damage.
7. How can I repair OBDII code P1139 in my MINI Cooper?
- Repairing this code typically involves replacing the faulty oxygen sensor, repairing any damaged wiring or connectors, or resetting the PCM after addressing the issue.
8. Can I fix the O2 Sensor Heater Circuit High Voltage Bank 1 Sensor 2 code in my MINI at home?
- Depending on your mechanical skills and access to tools, you may be able to address this issue at home by following repair guides or seeking assistance from online forums.
9. How much does it cost to repair OBDII code P1139 in a MINI Cooper at a professional auto repair shop?
- The cost of repairs can vary depending on the specific cause of the code, but it may range from $150 to $400 for parts and labor.
10. Are there any preventive measures to avoid OBDII code P1139 in my MINI Cooper?
- Regular maintenance, such as checking and replacing oxygen sensors as recommended by the manufacturer, can help prevent issues that trigger this code.
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