P0158 FORD - O2 Sensor Circuit High Voltage Bank 2 Sensor 2
P0158 FORD Possible Causes
- Faulty Rear Heated Oxygen Sensor Bank 2
- Rear Heated Oxygen Sensor Bank 2 harness is open or shorted
- Rear Heated Oxygen Sensor Bank 2 circuit poor electrical connection
- Inappropriate fuel pressure
- Faulty fuel injectors
- Intake air leaks
- Exhaust gas leaks
How is the P0158 FORD code repair?Start by checking 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's pins.
What is the cost to diagnose the P0158 FORD code
Labor: 1.0The cost to diagnose the P0158 FORD code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.
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When is the code detected?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.
- Engine Light ON (or Service Engine Soon Warning Light)
- Possible higher than usual fuel consumption
P0158 FORD MeaningThe heated oxygen sensor 2 (HO2S), after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. For optimum catalyst operation, the air fuel mixture (air-fuel ratio) must be maintained near the ideal stoichiometric ratio. The HO2S output voltage changes suddenly in the vicinity of the stoichiometric ratio. The Engine Control Module (ECM) adjusts the fuel injection time so that the air-fuel ratio is nearly stoichiometric. The HO2S generates a voltage between 0.1 and 0.9 V in response to oxygen in the exhaust gas. If the oxygen in the exhaust gas increases, the air-fuel ratio becomes Lean. The ECM interprets Lean when the HO2S voltage is below 0.45 V. If the oxygen in the exhaust gas decreases, the air-fuel ratio becomes Rich. The ECM interprets Rich when the HO2S voltage is above 0.45 V.
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Information for specific Ford models
- P0158 1997 FORD F150
- P0158 1998 FORD F150
- P0158 1999 FORD F150
- P0158 2000 FORD F150
- P0158 2001 FORD F150
- P0158 2002 FORD F150
- P0158 2003 FORD F150
- P0158 2006 FORD FUSION 📷
- P0158 2007 FORD FUSION 📷
- P0158 2008 FORD FUSION 📷
- P0158 2009 FORD FUSION 📷
- P0158 2010 FORD FUSION 📷
- P0158 2011 FORD FUSION 📷
- P0158 2012 FORD FUSION 📷