Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
The cost to diagnose the P0158 2007 Ford Fusion code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.
The P0158 code is set when the Engine Control Module (ECM) detects that the rear O2 sensor signal voltage remains excessively high for an extended period of time.
The heated oxygen sensor (HO2S) signals are monitored for an over voltage condition. The code is set when the HO2S signal voltage is 1.5 volts or greater.
Need more information on how to fix the P0158 2007 Ford Fusion code? Get Access to Factory Service Manuals
Get the P0158 2007 Ford Fusion code diagnosed by a professional: Find a repair shop in your area