P112D BMW Code - Upstream Oxygen Sensor Open Circuit Monitoring Virtual Ground Failure or Pumping Current Failure Bank 2
Quick Answer
The oxygen sensor circuit monitoring detects the following malfunctions by evaluating the error information received from oxygen sensor monitoring functions. Common causes include Faulty Upstream Oxygen Sensor Bank 2, Upstream Oxygen Sensor Bank 2 harness is open or shorted, Upstream Oxygen Sensor Bank 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
- P112D BMW indicates Upstream Oxygen Sensor Open Circuit Monitoring Virtual Ground Failure or Pumping Current Failure Bank 2.
- Common causes
- Common causes include Faulty Upstream Oxygen Sensor Bank 2, Upstream Oxygen Sensor Bank 2 harness is open or shorted, Upstream Oxygen Sensor Bank 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 P112D BMW Description
This function shall be triggered only if one of the following diagnosis is active (to set the readiness bit), which are 'Upstream Oxygen Sensor - Signal Monitoring During Fuel Cut-off' and 'Upstream Oxygen Sensor - Heater Monitoring'. The function shall go to the state = “active” only if one of the above diagnosis detected a fault.
An open circuit in line Virtual Ground or in the line Pumping current can be detected if the sensor signal stocks near lambda 1. The sensor non-activity can be detected by the Oxygen Sensor Signal Monitoring During Fuel Cut-off (signal voltage below e.g. 2,1 V *) in fuel cut off).
What are the Possible Causes of the DTC P112D BMW?
- Faulty Upstream Oxygen Sensor Bank 2
- Upstream Oxygen Sensor Bank 2 harness is open or shorted
- Upstream Oxygen Sensor Bank 2 circuit poor electrical connection
How to Fix the DTC P112D 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 P112D 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.
Need more information about the P112D BMW code?
Need more information on how to fix the P112D BMW code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P112D BMW code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P112D BMW Code
1. What does the OBDII code P112D mean on a BMW?
P112D indicates an issue with the upstream oxygen sensor on Bank 2, specifically a virtual ground failure or pumping current failure.
2. What are the symptoms of the P112D code in a BMW?
Symptoms may include poor fuel economy, rough idling, reduced engine performance, and the illumination of the check engine light.
3. What causes the P112D code to appear in a BMW?
Common causes include a faulty upstream oxygen sensor, damaged wiring or connectors, or issues with the engine control module (ECM).
4. Can a bad oxygen sensor trigger the P112D code?
Yes, a faulty upstream oxygen sensor on Bank 2 is one of the primary causes of the P112D code.
5. How do I diagnose the P112D code on my BMW?
Diagnosis involves checking the oxygen sensor, inspecting the wiring and connectors for damage, and testing the ECM for proper functionality.
6. Can I drive my BMW with the P112D code active?
Driving with the P112D code is not recommended, as it may lead to further engine performance issues and increased emissions.
7. How do I fix the P112D code on a BMW?
Repairs may include replacing the upstream oxygen sensor, repairing damaged wires, or reprogramming or replacing the ECM if necessary.
8. How much does it cost to fix the P112D code on a BMW?
Costs can vary, but replacing an oxygen sensor typically ranges from $150 to $400, while wiring repairs or ECM replacement may cost more.
9. Can a dirty air filter cause the P112D code?
While unlikely, a dirty air filter can affect fuel-air mixture and sensor readings, so it’s worth inspecting and replacing if needed.
10. Do I need to reset the ECU after fixing the P112D code?
Yes, after making repairs, you should reset the ECU using an OBDII scanner to clear the code and verify the issue is resolved.
Discuss the causes and fixes for P112D BMW OBDII Code
Code P112D BMW comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
