Answer
Sep 18, 2022 - 01:12 AM
Hum.... I'd say it's possible, but not likely...
Diagnostic trouble code P0131 (O2 Sensor Circuit Low Voltage Bank 1 Sensor 1) indicates that there's something wrong with O2S B1/S1 and, in most cases, points to an internal short in the sensor itself or an exhaust system leak.
However, it's important to mention that, when it comes to O2 sensors, pretty much anything that might have an impact on the air/fuel ratio might eventually falsely trigger O2 sensor-related DTC codes... but once again, a leaking fuel pump could be pushing it a little. When the fuel pump is leaking, the fuel pressure will usually be lower, which would trigger fuel trim or evap system-related DTCs instead. Still, I'm not saying it's 100% out of the question — it's quite tricky to diagnose a fuel system issue online without being able to test anything, and further testing would definitely be required here.
Luckily, this BMW Z4 Service & Repair Manual does cover the diagnostic trouble codes (DTC), as well as the corresponding troubleshooting and repair procedure provided by the manufacturer.
Diagnostic trouble code P0131 (O2 Sensor Circuit Low Voltage Bank 1 Sensor 1) indicates that there's something wrong with O2S B1/S1 and, in most cases, points to an internal short in the sensor itself or an exhaust system leak.
However, it's important to mention that, when it comes to O2 sensors, pretty much anything that might have an impact on the air/fuel ratio might eventually falsely trigger O2 sensor-related DTC codes... but once again, a leaking fuel pump could be pushing it a little. When the fuel pump is leaking, the fuel pressure will usually be lower, which would trigger fuel trim or evap system-related DTCs instead. Still, I'm not saying it's 100% out of the question — it's quite tricky to diagnose a fuel system issue online without being able to test anything, and further testing would definitely be required here.
Luckily, this BMW Z4 Service & Repair Manual does cover the diagnostic trouble codes (DTC), as well as the corresponding troubleshooting and repair procedure provided by the manufacturer.
