P0136Infiniti G37Years: 1996 - 2026
O2 Sensor Circuit Malfunction (Bank 1, Sensor 2)
Reviewed by ASE Certified Technician
What does this mean?
Code P0136 indicates a malfunction in the downstream oxygen sensor circuit on Bank 1. This sensor monitors catalytic converter efficiency.
Disclaimer: This diagnostic code is part of the standard OBD2 system and can apply to Infiniti G37 models manufactured from 1996 to 2026. However, please note that the presence of this specific code depends on your vehicle's exact engine configuration, options, and production year.
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Common Causes
Faulty oxygen (O2) sensor
Damaged, chafed, or broken wiring harness
Exhaust leak before oxygen sensor
Failing or clogged catalytic converter
Symptoms to Watch For
- Check Engine Light is illuminated
- Decreased fuel economy
- Failed emissions test