p0135
Easy Fix
Acura · Sedans
O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)
Quick Answer
Error code P0135 on your Acura Sedans means: O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1). This is usually fixable — see the step-by-step guide below.
Affected Models
Likely Causes
How to Fix It
1
Check fuse in oxygen sensor heater circuit
2
Test oxygen sensor heater resistance
3
Inspect wiring for breaks or corrosion
4
Test heater voltage at connector
5
Replace oxygen sensor if heater is faulty
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
Oxygen sensor
Fuses
Dielectric grease
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