P0135 on Your 2022 Nissan Altima
Your 2022 Nissan Altima has set a P0135 diagnostic code, indicating a malfunction in the oxygen sensor heater circuit for Bank 1, Sensor 1. The 2022 Altima features either the 2.5L four-cylinder (188 hp) or the innovative 2.0L VC-Turbo engine (248 hp). Both are inline engines with a single exhaust bank.
At 2-3 years old, your Altima may be experiencing early sensor wear or a manufacturing issue that's now manifesting. Bank 1 Sensor 1 is the upstream O2 sensor before the catalytic converter.
Symptoms You May Notice
- Check engine light on (steady)
- Slightly reduced fuel economy
- Minor rough idle when cold
- Extended warm-up period
- Emissions test failure
Most Altima owners find the car drives fine once warmed up. The heater circuit issue primarily affects cold-start emissions.
Common Causes
O2 Sensor Heater Element Failure
The heater element can fail from manufacturing variation or early wear. This is the most common cause on a relatively new Altima.
Connector or Wiring Issue
Heat exposure, vibration, or corrosion can affect the sensor connector or wiring over time.
Blown Fuse
A blown O2 heater fuse disables the heater circuit. This is a quick, free check.
Ground Circuit Problem
A poor ground connection can prevent proper heater operation.
Warranty Coverage
Your 2022 Altima's warranty status:
- Bumper-to-Bumper: 3 years/36,000 miles (may still apply)
- Powertrain: 5 years/60,000 miles
- Federal Emissions: 8 years/80,000 miles for certain components
Contact your Nissan dealer to verify coverage before paying for repairs.
Diagnosis Steps
- Check warranty—May eliminate cost
- Scan for codes—Note companion codes
- Check fuse—Quick and free
- Inspect connector—Look for corrosion
- Test heater resistance—Should be 2-30 ohms
Repair Costs (If Out of Warranty)
Professional Repair
- Dealer: $180-$320
- Independent shop: $150-$280
DIY Approach
- OEM Nissan sensor: $80-$150
- Quality aftermarket: $50-$100
DIY Replacement
The upstream O2 sensor on the Altima is accessible from above:
- Work with cold engine
- Apply penetrating oil overnight
- Disconnect electrical connector
- Use O2 sensor socket
- Apply anti-seize to new sensor threads
- Torque to spec and clear codes
VC-Turbo Engine Considerations
If your Altima has the VC-Turbo engine, the sensor replacement procedure is similar, but the sophisticated engine management benefits from OEM sensors and dealer diagnosis.