P0368: Camshaft Position Sensor B Circuit High Bank 1

Camshaft position sensor B is the exhaust camshaft sensor (bank 1 = side with cylinder 1), usually a Hall sensor on the exhaust cam phaser. P0368 means the signal line stays high without edges. If the signal wire is open, the roughly 5 V the engine module applies to it simply remains; if the sensor's 5 V supply or ground is missing, the sensor never switches and the signal also stays high – and a short to positive has the same effect. A code-specific manufacturer description exists only from GM: on the Saab 9-4X 2.8 turbo V6 (LAU) the signal must stay high without pulses for more than 1 s, or 10 s cumulatively, and the code follows after two trips; GM lists exactly these causes. GM's other engines of 2014–2019 and Ford report such faults under P0365. The consequence is as for P0365: exhaust cam timing in its base position, longer cranking, some loss of power.

Bank 1 is the side of the engine with cylinder 1. Inline engines only have this bank.

Symptoms

• Check engine light on
• Longer cranking before the engine starts
• Loss of power or rough idle (exhaust cam timing in its base position)

Most likely causes

• Connector off or corroded, signal wire open
• 5 V reference or ground of the sensor open
• Sensor faulty (output does not switch)
• Signal wire shorted to positive

What to check, in order

Start with the simplest. You can tick off each step.

1. Check the connector and look for metal filings on the sensor
2. Check the sensor's ground and make sure the signal wire is not receiving voltage from another circuit.
3. See whether there is an RPM signal while cranking
4. Measure the signal with an oscilloscope if you can
5. Check the engine timing before replacing expensive parts

Good to know

• Repair difficulty: easy
• It can trigger limp mode.
• It affects emissions.

What each character of P0368 means

• P: Powertrain: engine and transmission
• 0: Generic code: same on every make
• 3: Ignition and misfires
• 68: Specific fault in that system

Frequently asked questions

Can I keep driving with code P0368?

Avoid driving: the engine can stall while moving. If the timing is off, continuing can cause serious damage.

What causes code P0368?

The most common causes are: connector off or corroded, signal wire open; 5 V reference or ground of the sensor open; sensor faulty (output does not switch).

Related codes

• P0365Camshaft Position Sensor B Circuit Bank 1
• P0366Camshaft Position Sensor B Circuit Range/Performance Bank 1
• P0367Camshaft Position Sensor B Circuit Low Bank 1
• P0393Camshaft Position Sensor B Circuit High Bank 2
• P0651Sensor Reference Voltage B Circuit/Open

Sources

• saabwisonline.com: dtc p0341 p0342 p0343 p0346 p0347 p0348 p0366 p036
• gsi.ext.gm.com: 18OBDG03A Engine Diagnostics
• law.cornell.edu: 13 CCR 1968.2

Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.