P0135 on Your New 2024 Sonata
Your 2024 Hyundai Sonata has triggered a P0135 diagnostic code, indicating a malfunction in the oxygen sensor heater circuit for Bank 1, Sensor 1. The 2024 Sonata offers the 2.5L four-cylinder (191 hp), 1.6L turbo (180 hp), or hybrid powertrain (192 hp combined). All are inline engines with a single exhaust bank.
On a brand-new vehicle, P0135 typically indicates a manufacturing issue. Full warranty coverage ensures free repair.
Symptoms
- Check engine light on
- Possibly nothing unusual
- Minor fuel economy reduction
Causes
Manufacturing Defect
O2 sensor manufacturing variation.
Assembly Issue
Connector or wiring problems during assembly.
Full Warranty Coverage
- Bumper-to-Bumper: 5 years/60,000 miles
- Powertrain: 10 years/100,000 miles
- Federal Emissions: 8 years/80,000 miles
Take your Sonata to any Hyundai dealer for free repair.
What to Expect
- Code scan and testing
- TSB check
- O2 sensor replacement
- Verification
Expect 1-2 hours for the repair.