P0135 on Your New 2024 Tucson
Your 2024 Hyundai Tucson has triggered a P0135 diagnostic code, indicating a malfunction in the oxygen sensor heater circuit for Bank 1, Sensor 1. The 2024 Tucson offers the 2.5L four-cylinder (187 hp), 1.6L turbo hybrid (226 hp combined), or PHEV (261 hp combined). All feature inline engines with a single exhaust bank.
On a brand-new vehicle, P0135 typically indicates a manufacturing issue. Hyundai's excellent warranty 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 Tucson 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.
Hybrid/PHEV Notes
If your Tucson is a hybrid or PHEV, the O2 sensor diagnosis is similar, but the engine operates differently due to electric motor assistance. The dealer has specialized hybrid diagnostic equipment.