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CarCodeFix
P0036Medium Priority

Heated Oxygen Sensor (HO2S) Heater Control Circuit Bank 1 Sensor 2

Category: Powertrain• Fuel and Air Metering

4 articles · 1 makes affected

What is P0036?

Heated Oxygen Sensor (HO2S) Heater Control Circuit (Bank 1 Sensor 2). Malfunction in the heater circuit of the downstream oxygen sensor (after catalytic converter).

Symptoms You May Notice

  • ●Check engine light
  • ●Failed emissions test
  • ●Slightly reduced fuel economy

How to Fix It

  • ●Replace downstream O2 sensor ($100-$300, intermediate)
  • ●Repair wiring harness ($150-$350, intermediate)
  • ●Replace ECM (rare) ($500-$1500, professional)

Owner Statistics

Based on 4,350 real owner discussions • 172 confirmed solutions

Dataset (4,350 records)
$1,057
Average Repair Cost
4%
Success Rate
24%
DIY Repairs
4,350
Data Sources

About This Data

Statistics are aggregated from real owner discussions on Reddit, automotive forums, and YouTube comments. All data is anonymized and represents actual repair experiences reported by vehicle owners.

Frequently Appears With

These codes often appear together in owner reports. Check these if you see P0036.

Based on analysis of 10 owner reports where multiple codes appeared together.

Issues by Vehicle