P0368

Universal

Camshaft Position Sensor B Circuit High Input (Bank 2)

Time: 1-2 hours | Difficulty: Medium
High Severity

The P0368 code indicates that the powertrain control module (PCM) has detected a higher-than-expected voltage signal from the Camshaft Position Sensor B on Bank 2. This high input often means the sensor is not sending a reliable signal, which can severely impact engine timing and performance, leading to driveability issues or preventing the engine from starting.

Report an error with this code

⚠️ Before You Begin (Safety First)

Always ensure the engine is off and cool before working on any engine components. Disconnect the battery's negative terminal to prevent electrical shock or damage to the vehicle's electrical system. Wear appropriate personal protective equipment, such as safety glasses and gloves.

Common Symptoms

  • Check Engine Light illuminated
  • Engine misfires
  • Rough idling
  • Hesitation or stalling
  • Reduced engine performance
  • Difficulty starting the engine
  • Engine may not start at all

Common Causes

  • Faulty Camshaft Position Sensor B (Bank 2)
  • Short to voltage in the sensor circuit wiring
  • Corroded or damaged sensor connector
  • Faulty Powertrain Control Module (PCM) (rare)
  • Timing belt/chain issues (less common for 'high input' but can be related to sensor readings)

Frequently reported on: General/Universal (V6/V8/V10 engines)

Diagnostic Steps

  1. Connect an OBD-II scanner to confirm the P0368 code and check for any other related codes.
  2. Visually inspect the wiring harness and connector for the Camshaft Position Sensor B (Bank 2) for any signs of damage, corrosion, or loose connections.
  3. Disconnect the sensor connector and check for proper voltage (reference voltage, usually 5V) and ground at the connector using a multimeter.
  4. Test the resistance of the camshaft position sensor itself, comparing it to manufacturer specifications. Some sensors can also be tested for AC voltage output while cranking (if applicable).
  5. If the sensor tests faulty or wiring issues are found, replace the sensor or repair the wiring as needed.
  6. Clear the code with an OBD-II scanner and test drive the vehicle to see if the code returns.

👨‍🔧 When to Call a Professional

If basic diagnostic steps like checking wiring and the sensor replacement do not resolve the issue, or if the problem reoccurs, it is advisable to consult a professional mechanic. Complex electrical diagnostics or potential PCM issues require specialized tools and expertise.

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Commonly Asked Questions

Can I drive with a P0368 code?

Driving with this code is not recommended as it can lead to engine stalling, misfires, or even prevent the engine from starting, potentially causing unsafe driving conditions or further engine damage.

What is "Bank 2" referring to?

"Bank 2" refers to the cylinder bank that does not contain cylinder #1. In V-type engines, there are two banks of cylinders.

Is the camshaft position sensor difficult to replace?

The difficulty varies by vehicle, but it's generally a medium-difficulty DIY task. Accessibility to the sensor is the main factor.

Can a P0368 code cause my car to not start?

Yes, if the PCM cannot get a reliable signal from the camshaft position sensor, it may not be able to correctly time fuel injection and ignition, leading to a no-start condition.

Do I need special tools to diagnose P0368?

An OBD-II scanner is essential. A multimeter is also highly recommended to test the sensor and its wiring circuit.

Related OBD2 Codes

← P0367 ← P0366 ← P0365 p0368 P0369 → P0370 → P0371 →