Low o2 voltage signals a lean condition Diagnose the issue by using a scan tool to confirm the p0157 code and checking the o2 sensor's voltage output Discover how to diagnose if the cause is a faulty sensor circuit or an external engine system issue.
O2 Sensors or Oxygen Sensors for All Honda and Acura Vehicle in Mushin
P0137 means your downstream oxygen sensor on bank 1 — the one mounted after the catalytic converter — is reading too low for too long
In most cases the fix is straightforward
I had this issue, it is behind the catalytic converter, i had the spool valve leaking which covered the sensor in oil which triggered these errors I took it to a shop and they fixed the root cause. Inspect the o2 sensor, its wiring, and its connections for visible damage, including corrosion and contaminated fluids Put the vehicle into accessory mode and monitor all the oxygen sensors’ data in.
Don’t just replace the sensor Master the diy steps to accurately diagnose the p0137 code, testing the circuit, wiring, and exhaust for the true cause. Learn what the p0137 o2 sensor code means, common causes, symptoms, and repairs Find out if it’s safe to drive and how to fix it fast.
Dealing with the p0137 error code
🚗⚠️ this code indicates o2 sensor circuit low voltage for bank 1 sensor 2, which monitors the efficiency of your vehicle’s catalytic converter
