P0135 on the 2022 Ford Ranger
The 2022 Ford Ranger uses the 2.3-liter EcoBoost turbocharged four-cylinder engine producing 270 horsepower and 310 lb-ft of torque. A P0135 code on your Ranger indicates the upstream O2 sensor heater circuit has malfunctioned. This inline-four has a single exhaust bank, and the upstream sensor is positioned between the exhaust manifold and turbocharger in a demanding thermal environment.
Last of the Current Generation
The 2022 Ranger is one of the final years of the current-generation platform before the redesign. The 2.3L EcoBoost and its exhaust system are well-proven at this point. At two to three years old, a P0135 code is relatively early for heater failure, suggesting either a defective sensor or environmental damage rather than age-related wear.
Causes
- Premature sensor heater failure (High Likelihood): A defective Motorcraft heater element or one that failed early from the demanding turbo-adjacent thermal environment. While two to three years is young for heater failure, high-temperature turbo engines accelerate the wear compared to naturally aspirated engines.
- Environmental damage (Medium Likelihood): The Ranger sees diverse conditions. Work trucks encounter construction debris, off-road Rangers face mud and water, and daily drivers deal with road salt and potholes. All can damage sensor wiring and connectors.
- Blown heater fuse (Medium Likelihood): Check the power distribution box first. This takes seconds and can identify the cheapest fix.
- Wiring heat damage near turbo (Low-Medium Likelihood): The turbo area generates extreme heat. If heat shielding has shifted or was not properly installed, wiring insulation near the sensor can degrade even on a newer vehicle.
Diagnosis
Warranty Coverage
The 2022 Ranger is within the 8-year/80,000-mile federal emissions warranty. Visit your Ford dealer for a free O2 sensor repair. Do not spend money on diagnosis or parts when warranty coverage is available.
Quick Checks
Confirm the P0135 code with an OBD-II scanner. Check the heater fuse in the power distribution box. If you want to verify before your dealer appointment, the sensor is accessible from above (remove engine cover) or from underneath the truck.
Repair Costs
Under warranty: free. Out of pocket: Motorcraft sensor $65 to $130, shop labor $100 to $170, total $165 to $300. DIY requires navigating the turbo area but is feasible with the Ranger's body-on-frame design providing underbody access.
Midsize Truck Efficiency
The Ranger's appeal includes better fuel economy than full-size trucks at up to 26 mpg highway. A failed O2 sensor heater wastes fuel during cold starts, reducing the efficiency advantage. For a midsize truck owner who chose the Ranger partly for its fuel economy, fixing P0135 under warranty is an obvious decision.