cel code 37 closed loop - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Chue240sx · 01-20-2010, 12:17 AM

Just cruising then noticed that my check engine light came on. Did a self diagonistic test and codes read are 34 and 37. Changed knock sensor and clear codes and took for a test drive. Check engine light came back on after about 5 miles. Self diagnosed again and now only code 37 comes up which is for closed loop.
Drives normal to me.
I already changed to a brand new CTS. Could it be one of my O2 sensor?

95 obd1 240sx ka24de
bone stock engine and engine components.
185,000 miles on motor. Don't really know how much on O2 sensors.

01-20-2010, 12:17 AM	#1
Chue240sx Zilvia Addict Join Date: Sep 2007 Location: California Age: 34 Posts: 618 Trader Rating: (11) Feedback Score: 11 reviews	cel code 37 closed loop Just cruising then noticed that my check engine light came on. Did a self diagonistic test and codes read are 34 and 37. Changed knock sensor and clear codes and took for a test drive. Check engine light came back on after about 5 miles. Self diagnosed again and now only code 37 comes up which is for closed loop. Drives normal to me. I already changed to a brand new CTS. Could it be one of my O2 sensor? 95 obd1 240sx ka24de bone stock engine and engine components. 185,000 miles on motor. Don't really know how much on O2 sensors.