P0135 on Your New 2024 Elantra
Your 2024 Hyundai Elantra has triggered a P0135 diagnostic code, indicating a malfunction in the oxygen sensor heater circuit for Bank 1, Sensor 1. The 2024 Elantra offers several engine options: 2.0L four-cylinder (147 hp), 1.6L turbo (201 hp in N Line), or the hybrid powertrain. All are inline engines with a single exhaust bank.
On a brand-new vehicle, P0135 typically indicates a manufacturing issue. Comprehensive warranty coverage ensures free repair.
Symptoms
- Check engine light on
- Possibly nothing unusual
- Minor fuel economy reduction
Causes
Manufacturing Defect
O2 sensor manufacturing variation causing early failure.
Assembly Issue
Connector or wiring problems during assembly.
Software Calibration
ECM software may need refinement.
Full Warranty Coverage
Hyundai offers industry-leading 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 Elantra to any Hyundai dealer for free repair.
What to Expect at the Dealer
- Code scan and testing
- TSB check
- O2 sensor replacement
- Verification
Expect 1-2 hours for the repair.