P0365: Camshaft position sensor B circuit, bank 1: the engine computer sees a missing or faulty signal from the bank 1 exhaust camshaft sensor

Most likely causes

What to test first

Start at step 1. Each result tells you what it means and where to go next.

1. 1

   Step 1: With the engine off on level ground, check the oil level and note whether the engine has needed oil between changes.

   Low riskTool: dipstick

   • IfOil is low or the engine is using oil

     It meansTop up and have oil consumption and oil pressure looked at; on a 3.5L EcoBoost check the Ford bulletins.

     Points to: Excessive oil consumption from the crankcase ventilation system (Ford 3.5L EcoBoost)

   • IfOil is full and not being used

     It meansMove on to the wiring.

     Go to step 2

2. 2

   Step 2: Read all codes; inspect the exhaust cam sensor connector and harness for chafing, oil or loose pins, and reseat the connector.

   Low riskTool: scan tool, flashlight

   • IfMany unrelated sensor codes are stored (or fuse 44 is blown on a 2020-2021 Escape)

     It meansA shared reference voltage or harness short is likely.

     Points to: Damaged or shorted wiring to the sensor

   • IfCode does not return after reseating the connector

     It meansA poor connection was the cause.

     Points to: Loose connector or engine computer logic

   • IfCode returns with good wiring

     It meansTest the sensor signal.

     Go to step 3

3. 3

   Step 3: Have a shop compare the exhaust cam sensor signal with the crank sensor on an oscilloscope and check sensor power and ground.

   Best left to a shopTool: oscilloscope, service information

   Warning:Back-probing live sensor circuits needs care; shorting the reference voltage can stall the engine or damage the computer.

   • IfSignal missing or weak with good power and ground

     It meansReplace the sensor or correct its clearance.

     Points to: Failed exhaust camshaft position sensor or wrong clearance

   • IfSignal is good but timing to the crank is off

     It meansCheck oil and phasers.

     Points to: Low oil level or pressure, or worn cam phasers (Ford 3.5L EcoBoost)

Symptoms

• Check engine light on, sometimes with P0369 or P0366
• Hard starting or long cranking
• Rough running, misfire or brief loss of power
• Stalling or cranks but will not start Gets more serious: stop and have it checked.
• Oil level low or oil pressure warning Gets more serious: stop and have it checked.

Compare with: Check engine light with loss of power, Rough idle with the check engine light on

How to fix

1. 1

   Step 1: Check the oil level and top it up with the grade in your owner's manual.

   Warning:Engine off and on level ground; wait a few minutes for oil to drain back.

2. 2

   Step 2: Check that the exhaust camshaft sensor connector is fully latched and the wiring is not rubbed through or oil-soaked, then clear the code and see whether it returns.

   Warning:Engine off and cool.

On your vehicle

Related codes

• P0369The bank 1 camshaft position sensor 'B' signal drops out intermittently

  Same system Supported by vehicle data

  P0369 is the intermittent version for the same sensor; Ford lists both for low oil and oil consumption on the 3.5L EcoBoost.

• P0340Camshaft position sensor circuit fault (bank 1 or single sensor)

  Shares causes Supported by vehicle data

  Subaru and Ford bulletins list P0340 with P0365 when wiring or sensor clearance is the problem.

• P0344Camshaft position sensor A circuit intermittent, bank 1 or single sensor: the cam sensor signal drops out or comes and goes

  Shares causes Supported by vehicle data

  Ford lists P0344 and P0365 together when a harness short drops sensor reference voltage on 2020-2021 Escapes.

• P0014Exhaust camshaft timing ahead of target or slow to respond (bank 1)

  Shares causes Supported by vehicle data

  GM lists P0014 with P0365 for a harness short at the cam cover on Colorado and Canyon.

All Ignition and engine position sensors codes