Nissan Primera SR20DE P0135 and P0325 Fault Diagnosis & Solutions
Hello, I recently replaced the front oxygen sensor on my Nissan Primera SR20DE after receiving diagnostic trouble codes from a workshop. They identified that the original lambda (oxygen) sensor was damaged. After installation, the vehicle now shows code P0135 and the older P0325 code persists. The car stalls at idle, exhibits poor acceleration, feels like it's 'drowning in gasoline,' and experiences misfires around 4000 RPM. I suspect a possible sensor wiring issue or fuel line breakage. Could this be related to the heater circuit of the oxygen sensor? I'm looking for guidance on how to properly test both the knock sensor and lambda (oxygen) sensor. Specifically, what resistance values should I expect? For example, is the expected resistance range between 500–625 kΩ for both sensors? Also, how do I check for proper voltage and ground connections in the heater circuit? Are there any known issues with aftermarket parts? Any advice would be greatly appreciated as we are on vacation soon. Apologies for any grammar or language errors — I'm from Norway and not fluent in English. Thank you!
I'm based in the USA and don't have access to the Nissan Primera SR20DE model. However, for code P0135 — this typically indicates a heater circuit issue with the oxygen sensor. Please verify that the wiring is intact, check for 12V power and proper ground connection on the heater circuit side, and ensure relevant fuses are functioning. It's strongly recommended to use genuine Nissan parts rather than aftermarket sensors. For P0325 — confirm there are no engine knocking sounds, ticking noises, or exhaust leaks. The expected resistance for both knock sensor and oxygen sensor should be within 500–625 kΩ. Proper testing requires a multimeter to measure ohms under correct conditions. Always follow OEM specifications when diagnosing. Wishing you a safe vacation!