P0368 — Camshaft Position Sensor "B" Circuit High (Bank 1)

Can I continue driving with P0368?

If the engine runs smoothly, only a short trip may be reasonable, but P0368 can cause stalling or a no-start condition. Repair should be scheduled promptly, and driving should stop if the engine runs unevenly.

Does P0368 prove that the camshaft position sensor is defective?

No. P0368 identifies an excessive Bank 1 sensor "B" signal, but a short to power, damaged connector, poor ground, or PCM input fault can produce the same code.

What is camshaft position sensor "B" on Bank 1?

It is the camshaft position sensor designated "B" on the engine's Bank 1 side. Its exact physical location and whether it senses camshaft speed or angle depend on the vehicle design.

What should be checked before replacing the sensor for P0368?

Check the connector, signal-wire insulation, supply voltage, ground, and reference circuit first. A signal wire shorted to 5 V or 12 V can trigger P0368 even with a new sensor installed.

When your engine control unit stores trouble code P0368, it's reporting a problem with the camshaft position sensor circuit on the intake side of bank one. Specifically, the signal voltage coming from that sensor has climbed higher than the ECU can accept as valid. The powertrain control module continuously watches this input while the engine is running. If the reading stays out of bounds long enough across consecutive drive cycles, P0368 gets logged and the Check Engine light illuminates.

The bank-one designation points to the cylinder head or bank that holds the first cylinder in the firing order. On V-style engines this distinction matters because each bank has its own sensors and VVT components. The camshaft position sensor works alongside the crankshaft position sensor so the ECU can determine valve timing relative to piston position. This relationship is critical for variable valve timing operation, fuel injection scheduling, and ignition timing. When the sensor or its circuit fails, the engine loses precise cam-position feedback, forcing the computer into a backup strategy that typically reduces performance and may trigger additional misfire codes.

Freeze frame data accompanies P0368 in the ECU memory. That snapshot captures RPM, engine load, coolant temperature, vehicle speed, and other sensor readings at the exact moment the fault was detected. Reviewing that data before clearing the code gives you the best starting point for recreating the failure condition during testing.

Common Symptoms of P0368

The Check Engine light will be on and remain illuminated until the fault clears. Fuel economy typically drops noticeably because the ECU cannot optimize injection timing without accurate cam position data. Many drivers report extended cranking time or difficulty starting the engine, especially when warm. Engine power feels reduced across the RPM range, with particular weakness during acceleration. At idle, the engine may run roughly or exhibit a distinct shaking that worsens when accessories load the electrical system. In the most serious cases, where timing has jumped significantly or the sensor has failed completely, the engine may not start at all.

What Causes P0368?

The most frequent culprits are the camshaft position sensor itself and the wiring that feeds its signal back to the ECU. Connector pins can corrode, terminals can bend, and harness sections can chafe against engine brackets or accessories. A failing sensor produces erratic or constant-high voltage readings that never normalize. Beyond the sensor, the variable valve timing oil control valve occasionally sticks or becomes clogged with sludge, preventing proper hydraulic operation of the phaser. This causes the cam position to drift from commanded values, creating a signal the ECU interprets as a circuit fault. The reluctor ring mounted to the camshaft can also crack or shift, producing irregular tooth patterns that confuse the sensor. Finally, mechanical wear in the cam phaser itself allows excessive advance or retard, though this is less common than electrical failures.

How to Diagnose P0368

Begin by connecting an OBD2 scanner and retrieving all stored codes along with the freeze frame data. P0368 will almost certainly appear, but note any related misfire codes or other cam-crank correlation faults present simultaneously. Before touching any components, check manufacturer technical service bulletins for your specific make, model, and model year — many P0368 occurrences have documented factory fixes or software calibrations that resolve the issue without parts replacement. Next, perform a thorough visual inspection of the wiring harness and connectors at the camshaft position sensor and VVT solenoid. Look for damaged insulation, corroded pins, and any signs of oil intrusion into connectors. Check the oil level and condition; black, thick, or low oil cannot actuate the VVT system properly. With the engine running, monitor the camshaft position sensor signal in live data and compare actual timing position against commanded values while revving through the RPM range. If the signal stays stuck high or shows no variation, the sensor or circuit is confirmed faulty. Clear the code, complete a drive cycle that mirrors the freeze frame conditions, and verify P0368 does not return.

Repair Options for P0368

If inspection reveals a faulty camshaft position sensor, replacement is straightforward and relatively inexpensive compared to other repairs. A new sensor runs between $120 and $350 for parts, with labor typically included in that range at most independent shops. When the VVT oil control valve is the root cause, expect to pay $200 to $500 for the solenoid and its installation. In the minority of cases where the timing chain or belt has jumped, or the phaser itself has failed, repair costs escalate significantly to somewhere between $800 and $2,500 depending on engine design and labor rates in your area.

How Much Does It Cost to Fix P0368?

Repair costs vary widely depending on which component actually failed. A straightforward camshaft position sensor replacement typically runs $120 to $350 including parts and labor. VVT oil control valve replacement is slightly more expensive at $200 to $500. The most expensive scenario involves timing chain or belt repairs, where costs reach $800 to $2,500. Overall, fixing P0368 usually costs between $120 and $2,500. The key to avoiding unnecessary expense is performing a proper diagnosis before purchasing parts — the most costly repair is rarely the first one to blame.

Can You Drive with P0368?

Drive with caution. The engine will operate in a reduced-performance mode, and you may notice sluggish acceleration and rough running. On interference engines, a significant timing jump combined with continued driving risks contact between valves and pistons, which can cause catastrophic internal damage. Have the code diagnosed before planning any long trips or continuing regular commute driving.

Related OBD2 Codes

• P0300: Random/Multiple Cylinder Misfire Detected
• P0301: Cylinder 1 Misfire Detected
• P0302: Cylinder 2 Misfire Detected
• P0303: Cylinder 3 Misfire Detected
• P0304: Cylinder 4 Misfire Detected
• P0305: Cylinder 5 Misfire Detected