p0135
Easy Fix
Honda · SUVs
O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1
Quick Answer
Error code P0135 on your Honda SUVs means: O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
RW1RW3RW5RV1CR-V EX 2024CR-V EX-L 2024CR-V Hybrid Sport 2024CR-V Hybrid Sport Touring 2024CR-V Hybrid Sport-L 2024CR-V LX 2024CR-V Sport 2024CR-V Sport Touring 2024HR-V EX-L 2024HR-V LX 2024HR-V Sport 2024Passport EX-L 2024Passport Sport 2024Passport Touring 2024Passport TrailSport 2024Pilot EX 2024Pilot EX-L 2024Pilot Elite 2024Pilot LX 2024Pilot Touring 2024Pilot TrailSport 2024YG7YA7ZD1RZ1
Likely Causes
How to Fix It
1
Check and replace the O2 sensor heater fuse if blown
2
Measure the O2 sensor heater resistance at the sensor connector (typically 10-16 ohms for Honda sensors)
3
Verify that battery voltage is present on the heater power wire with the ignition on
4
Inspect the O2 sensor connector for melted, corroded, or damaged terminals
5
Replace the oxygen sensor if the heater element resistance is open or out of range
Pro Tip
This is a common issue that most users can resolve without specialized tools. Try the first step before moving on to more complex solutions.
Parts You May Need
Upstream oxygen sensor (Bank 1, Sensor 1)
O2 sensor heater fuse
Wiring repair connectors
O2 sensor connector pigtail
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