P1155 BMW Code - O2 Sensor Heater Circuit Intermittent Bank 2 Sensor 2
Quick Answer
P1155 BMW indicates O2 Sensor Heater Circuit Intermittent Bank 2 Sensor 2. Common causes include Faulty O2 Sensor Heater Bank 2 Sensor 2, O2 Sensor Heater Bank 2 Sensor 2 harness is open or shorted, O2 Sensor Heater Bank 2 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
- P1155 BMW indicates O2 Sensor Heater Circuit Intermittent Bank 2 Sensor 2.
- Common causes
- Common causes include Faulty O2 Sensor Heater Bank 2 Sensor 2, O2 Sensor Heater Bank 2 Sensor 2 harness is open or shorted, O2 Sensor Heater Bank 2 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 P1155 BMW Description
What are the Possible Causes of the DTC P1155 BMW?
- Faulty O2 Sensor Heater Bank 2 Sensor 2
- O2 Sensor Heater Bank 2 Sensor 2 harness is open or shorted
- O2 Sensor Heater Bank 2 Sensor 2 circuit poor electrical connection
How to Fix the DTC P1155 BMW?
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 P1155 BMW 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 P1155 BMW Code
What does the OBDII code P1155 mean for a BMW?
P1155 indicates an intermittent issue with the oxygen sensor heater circuit for Bank 2 Sensor 2.
What are the symptoms of a P1155 code?
Symptoms may include poor fuel efficiency, rough idling, increased emissions, or the check engine light being illuminated.
What causes the P1155 code on a BMW?
Common causes include a faulty oxygen sensor, damaged wiring or connectors, or issues with the vehicle's power supply to the heater circuit.
Which oxygen sensor is affected by the P1155 code?
The P1155 code refers to the downstream oxygen sensor, located after the catalytic converter, on Bank 2.
How can I diagnose a P1155 code on my BMW?
Inspect the oxygen sensor wiring and connectors for damage, test the heater circuit for proper voltage, and use a multimeter to check sensor resistance.
Can driving with a P1155 code damage my BMW?
While it may not cause immediate damage, ignoring the code can lead to poor engine performance and increased emissions over time.
How do I fix a P1155 code on a BMW?
Repairs typically involve replacing the faulty oxygen sensor, repairing damaged wiring, or addressing issues with the heater circuit.
How much does it cost to fix a P1155 code?
Costs vary but replacing the oxygen sensor typically ranges from $150 to $350, depending on parts and labor.
Can a P1155 code be caused by a bad catalytic converter?
While rare, a failing catalytic converter could indirectly affect the downstream oxygen sensor readings, causing intermittent heater circuit issues.
Is it necessary to clear the code after repairs?
Yes, clearing the code with an OBDII scanner ensures the check engine light turns off and allows you to verify that the issue is resolved.
Discuss the causes and fixes for P1155 BMW OBDII Code
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