When it comes to diagnosing and troubleshooting BMW vehicles, the P2626 code is a very important one to know. This code is used to diagnose a fault in the O2 Sensor Pumping Current Trim Circuit for Bank 1 Sensor 1. This code is triggered when the engine is started, the battery voltage is at least 11v and the trailing throttle overrun abort is present for two seconds or more. It also occurs when the O2 sensor is heated to the adequate temperature and the criterion remains present for one second. To fix the problem, a qualified technician needs to check the activation of the Recirculation Pump Relay, as well as the oxygen sensor before and after the catalytic converter, as well as the oxygen sensor heater before and after the catalytic converter.
Causes and Solutions for BMW P2626 Code
| Cause | Solution |
|---|---|
| Check activation of Recirculation Pump Relay | Make sure the relay is properly activated. |
| Oxygen sensor (before catalytic converter) is faulty | Replace the oxygen sensor. |
| Oxygen sensor (behind catalytic converter) is faulty | Replace the oxygen sensor. |
| Oxygen sensor heater (before catalytic converter) is faulty | Replace the oxygen sensor heater. |
| Oxygen sensor heater (behind catalytic converter) is faulty | Replace the oxygen sensor heater. |
When troubleshooting a BMW with the P2626 code, it is important to have a thorough understanding of the code and what it means. P2626 is a code used to diagnose a fault in the O2 Sensor Pumping Current Trim Circuit for Bank 1 Sensor 1. This code is triggered when the engine is started, the battery voltage is at least 11v and the trailing throttle overrun abort is present for two seconds or more. It also occurs when the O2 sensor is heated to the adequate temperature and the criterion remains present for one second. To fix the problem, a qualified technician needs to check the activation of the Recirculation Pump Relay, as well as the oxygen sensor before and after the catalytic converter, as well as the oxygen sensor heater before and after the catalytic converter. It is important to note that not all P2626 codes are the same and each code may have its own causes and solutions. Therefore, it is important to understand the specific causes and solutions for the particular BMW P2626 code.
Checking the Activation of the Recirculation Pump Relay
The first step in diagnosing a P2626 code is to check the activation of the recirculation pump relay. This should be done by a qualified technician who can use a scan tool to check the relay activation. If the relay is not properly activated, then the technician should replace the recirculation pump relay.
Replacing the Oxygen Sensors
If the recirculation pump relay is properly activated, then the next step is to check the oxygen sensors. This includes the oxygen sensor before and after the catalytic converter, as well as the oxygen sensor heater before and after the catalytic converter. If any of these sensors are faulty, then the technician should replace them.
Conclusion
Diagnosing and Troubleshooting BMW P2626 Code
The P2626 code is a very important one to know when it comes to diagnosing and troubleshooting BMW vehicles. This code is used to diagnose a fault in the O2 Sensor Pumping Current Trim Circuit for Bank 1 Sensor 1. To fix the problem, a qualified technician needs to check the activation of the Recirculation Pump Relay, as well as the oxygen sensor and oxygen sensor heater before and after the catalytic converter. By following these steps, the technician can properly diagnose and troubleshoot a BMW with the P2626 code. It is important to note that not all BMW P2626 codes are the same and each code may have its own causes and solutions, so it is essential for technicians to understand the specific causes and solutions for the particular BMW P2626 code.
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