OBD-II trouble code
P0367: Camshaft Position Sensor 'B' Circuit Low (Bank 1)
Signal voltage on the Bank 1 exhaust camshaft sensor is below the accepted range. Whether the 'A' sensor on the same bank is also complaining is the fastest way to split a shared-circuit fault from a sensor-specific one.
Quick facts
- System
- Powertrain
- Category
- Camshaft / Timing
- Severity
- Medium severity
- Drivable
- Usually safe to drive short-term
- Repair cost range
- $60 – $420
- DIY difficulty
- Intermediate DIY
What does P0367 mean?
P0367 sets when the engine control module (ECM) sees the signal line from the Bank 1 'B' camshaft position sensor — the exhaust cam sensor on most dual-cam engines — sitting below its low threshold. Something is holding that line down toward ground rather than letting it swing as the camshaft turns.
The useful diagnostic lever here is that the 'B' sensor almost never has the circuit to itself. On the vast majority of engines both camshaft sensors on a bank are fed from the same 5-volt reference and returned through the same sensor ground, splitting off into individual signal wires only close to the sensors themselves. That shared architecture gives you a free first test that costs nothing but reading the full code list.
If P0367 is stored alone, the shared reference and ground are demonstrably fine — they are still supporting the 'A' sensor on the same bank — and the fault must lie in the short, sensor-specific branch: the 'B' signal wire, the 'B' connector, or the sensor itself. If instead the corresponding 'A' code is stored alongside it, stop looking at the sensors entirely and go to the shared reference or ground, because two independent sensors failing the same way at the same time is far less likely than one common supply collapsing.
That single question redirects the whole job, and it takes ten seconds. It also explains a frustrating pattern people run into on these engines: replacing the exhaust cam sensor, seeing the code return, replacing the intake one too, and only then discovering a chafed reference wire upstream that was pulling both of them down.
Common causes
- Bank 1 'B' signal wire shorted to ground between the sensor and the module
- Internally shorted exhaust camshaft position sensor
- Shared 5-volt reference dragged down by a fault elsewhere on the same circuit
- Oil or moisture in the sensor connector bridging signal to ground
- Terminals corroded or pushed together inside the connector body
- Harness chafe where the cam sensor leads cross the valve cover or a bracket
- Aftermarket sensor of the wrong specification producing an out-of-range output
Symptoms
- Check engine light on with P0367 stored
- Rough idle and reduced low-speed response
- Exhaust cam phasing disabled, leaving the engine feeling flat
- Slight loss of fuel economy
- Higher emissions output
- Normal cranking and starting in most cases
- Possible additional codes if the shared reference circuit is the actual fault
Diagnostic steps
- 1.Read the complete code list before touching a tool. If the Bank 1 'A' sensor is also reporting a low or reference fault, suspect the shared 5-volt supply rather than either sensor.
- 2.If P0367 is alone, note that the shared reference and ground are proven good by the healthy 'A' sensor, and confine the search to the 'B' branch.
- 3.Unplug the exhaust camshaft sensor and measure the signal pin at the harness with the key on. Voltage that stays low with the sensor removed means the wire is shorted; voltage that recovers means the sensor was the cause.
- 4.Inspect the connector for oil wicking in from a leaking sensor O-ring, which is common on this sensor and bridges pins as it accumulates.
- 5.Trace the short section of harness between the connector and where the cam sensor leads join the main loom, paying attention to anywhere it crosses the valve cover or a metal bracket.
- 6.Verify you are working on the correct sensor. The 'B' sensor is normally the exhaust-side one and is frequently a different part number from the intake sensor it sits near.
- 7.After repair, confirm the signal toggles cleanly on live data and that exhaust cam phasing responds to command.
Repair cost
$60 – $420
The sensor is typically $40 to $200 with half an hour to two hours of labor, driven mostly by whether the exhaust cam sensor sits in the open or behind the intake plenum. A shorted wire repair is generally $80 to $250. If the fault turns out to be a shared reference circuit, add diagnostic time to locate the actual short, which may be at a different sensor entirely.
Estimate your repair
Run the numbers for your vehicle
Open the Repair Cost Estimator with camshaft position sensor replacement preselected. Adjust labor rate and vehicle category to fit your situation.
DIY vs shop
This is an intermediate DIY job. It usually involves diagnostic steps, specialty parts, and some careful work in tight spaces. If you have the tools and a service manual or trustworthy video for your specific vehicle, it is achievable in a weekend. Otherwise, a competent independent shop will be faster.