What does fault code P0135 mean?
Diagnostic trouble code P0135 is defined as O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1). This standard OBD2 code is triggered when your car's powertrain or module sensor voltage deviates from calibrated safety tolerances.
Severity & Can I Drive With Code P0135?
Severity Rating: 2/5 (Moderate Severity)
ℹ️ Can I Drive? You can drive short distances safely, but address this fault soon to maintain optimal engine performance and pass emissions testing.
Common Symptoms of P0135
- Check engine light on
- Higher fuel consumption in cold starts
Common Causes Ranked by Likelihood
- Blown O2 sensor heater fuse
- Burned-out O2 sensor internal heating element
DIY Repair & Troubleshooting Steps
- Check O2 sensor fuse in engine fuse box
Professional Shop Repair & Estimated Cost Range
- Replace Bank 1 Sensor 1 O2 sensor
Estimated Repair Cost Range: $100 - $300
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