🚗 BMW P112D Error Code – Causes, Symptoms, and Solutions

🔎 Possible Causes of BMW P112D Code

The P112D code indicates a problem with the oxygen sensor (O2), bank 2, sensor 1. Possible causes include:

✅ Faulty oxygen sensor (O2) (bank 2, sensor 1)
✅ Open or short circuit in the O2 sensor wiring
✅ Poor electrical connection in the O2 sensor circuit

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⚠️ Possible Symptoms

If your vehicle has the P112D code, you may experience the following symptoms:

🚨 Check engine light on (“Check Engine” or “Service Engine Soon”)
🚗 Reduced engine performance (in some cases)
⛽ Increased fuel consumption

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🛠️ How to Fix BMW P112D Code?

To correct this issue, follow these steps:

1️⃣ Check the possible causes mentioned above.
2️⃣ Visually inspect the wiring harness and connectors: look for damaged wires, broken, bent, or corroded pins.
3️⃣ Replace the O2 sensor if necessary after confirmation with a multimeter or diagnostic tool.
4️⃣ Clear the error code and test again with an OBD-II scanner.

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📖 Meaning of BMW P112D Code

The engine control module (ECM) monitors the oxygen sensor (O2), bank 2, sensor 1.
When this sensor does not operate according to manufacturer specifications, the P112D code is stored and may affect engine operation.