P0395

Universal

Camshaft Position Sensor B Circuit High Input (Bank 2)

Definition source: General OBD-II reference catalog
Definition verification: Not independently verified for display.
Time: Varies by diagnosis and vehicle | Diagnostic difficulty: Medium
Medium Severity

The engine computer monitors the signal circuit from camshaft position sensor B on Bank 2. This code means the signal voltage was detected as higher than expected. The sensor helps the computer track camshaft position for engine timing and operation, so an incorrect signal can affect starting, smooth running, or performance. The code identifies a detected circuit condition; it does not prove the sensor itself has failed.

Report an error with this code

⚠️ Before You Begin (Safety First)

If the engine stalls, runs very roughly, or loses power, stop in a safe place and arrange diagnosis rather than continuing to drive. If the engine runs normally, have the code checked soon and watch for worsening symptoms. Avoid probing wiring unless you know how to do so safely.

Common Symptoms

  • There may be no noticeable symptoms if the signal problem is intermittent or the engine computer can compensate.
  • The engine may take longer to start or may be difficult to start if camshaft position information is unreliable.
  • Rough running, hesitation, or reduced performance may occur if engine timing or synchronization is affected.
  • The check-engine light may be on.

Common Causes

  • A damaged, contaminated, loose, or internally faulty camshaft position sensor B on Bank 2 may produce an incorrect signal.
  • A connector problem, such as corrosion, loose terminals, or damaged wiring, can affect the signal circuit.
  • Wiring damage or an unintended electrical connection may cause the circuit signal to read high.
  • A fault elsewhere in the sensor circuit or, less commonly, in the engine computer may cause the detected condition.

Diagnostic Steps

  1. Record the code and any other stored codes before clearing anything; related codes can help narrow down whether the issue involves a sensor signal or a broader engine problem.
  2. With the engine off and cool, check accessible wiring and connectors for looseness, visible damage, corrosion, or contamination. Do not pull on wires or force connector locks.
  3. If a connector is visibly loose or dirty, follow the vehicle's service guidance for safe inspection and reconnection; avoid applying cleaners or lubricants unless specified for that connector.
  4. If you have a scan tool, note whether the code returns and whether symptoms change, but do not treat a cleared code as proof that the fault is repaired.
  5. If the code returns, symptoms are present, or access requires removing components, arrange testing using service information specific to the vehicle's year and engine.

When to Call a Professional

A technician can confirm the code and related codes, inspect live camshaft data, and test the sensor signal and circuit using vehicle-specific service information. Checking wiring and connector condition is important before condemning the sensor; further signal testing can help distinguish a sensor fault from a circuit or control-module issue.

Compare component listings

Confirm diagnosis and vehicle fitment before buying. A listing does not prove that a part needs replacement. We may earn a commission from qualifying purchases.

Search Amazon Search eBay

Commonly Asked Questions

Does P0395 prove that camshaft position sensor B needs replacement?

No. It identifies a high-input condition in that sensor's circuit, but wiring, connector, or other circuit faults can produce a similar result. Diagnosis should come before replacing parts.

What does Bank 2 mean in this code?

Bank 2 identifies the engine bank associated with the code. Its location and the position of sensor B depend on the vehicle's engine layout, so use model- and engine-specific service information.

Can I drive with this code?

It depends on how the engine behaves. If it stalls, runs very roughly, or loses power, stop driving when safe and seek assistance. If it runs normally, arrange diagnosis soon and monitor for changes.

What does circuit high input mean?

The engine computer detected a sensor-circuit signal voltage higher than expected. The code does not by itself identify why the signal is high or specify which component has failed.

Browse Available Code Guides

Previous and next available guides in database record order, across makes. Adjacent entries may share a code number and do not necessarily describe related faults.