P0135 on the 2022 Ford Edge
The 2022 Ford Edge uses the 2.0-liter EcoBoost turbocharged four-cylinder engine producing 250 horsepower as standard, with the Edge ST featuring the 2.7L EcoBoost V6. A P0135 code on the 2.0L model indicates the upstream O2 sensor heater circuit has malfunctioned. The sensor sits in the demanding thermal environment between the exhaust manifold and turbocharger on this transverse-mounted four-cylinder.
Approaching End of Production
The 2022 Edge is near the end of this generation's production run. The platform and engine are well-refined, meaning a P0135 code is more likely a random component failure than a systemic issue. Ford has had years to optimize sensor positioning, wiring routing, and heat shielding on this platform.
Root Causes
- O2 sensor heater failure (High Likelihood): The Motorcraft sensor heater coil can fail from thermal fatigue even at two to three years old in the hot turbo-adjacent location. The 2.0L EcoBoost pushes exhaust temperatures higher than naturally aspirated engines, stressing the heater element.
- Wiring or connector issue (Medium Likelihood): Heat exposure and vibration can degrade wiring insulation and loosen connector pins. The transverse engine layout and compact engine bay position the sensor wiring close to multiple heat sources.
- Blown fuse (Medium Likelihood): The O2 heater fuse in the power distribution box is always the first check. Quick, free, and eliminates the simplest possibility.
- PCM driver concern (Low Likelihood): The PCM controls the heater ground circuit. An internal driver failure is rare but should be investigated if resistance and power supply tests pass.
Diagnosis
Warranty Coverage
The 2022 Edge is within the 8-year/80,000-mile federal emissions warranty. Visit your Ford dealer for a free O2 sensor diagnosis and repair.
Quick Verification
Confirm P0135 with an OBD-II scanner. Check the heater fuse. If you want to inspect the sensor, it is accessible by removing the engine cover and working around the turbo piping from above, or from underneath with the vehicle raised.
Repair Costs
Under warranty: free. Out of pocket: Motorcraft sensor $60 to $125, shop labor $100 to $170. Total: $160 to $295. DIY is moderately challenging on the transverse EcoBoost but feasible with a 22mm O2 sensor socket and patience.
Keep Your Edge Efficient
The Edge offers a good balance of interior space and fuel efficiency at up to 29 mpg highway. A failed heater wastes fuel during every cold start, reducing that efficiency. The check engine light also prevents you from detecting other issues. With free warranty coverage available, fix P0135 promptly and maintain the Edge's designed performance.