P0395
UniversalThe Powertrain Control Module (PCM) detects a voltage reading from the Camshaft Position Sensor 'B' circuit on Bank 2 that is higher than the specified range.
Medium SeverityThis code indicates that the vehicle's computer has detected an unusually high voltage signal from the Camshaft Position Sensor B on engine Bank 2. This typically means the sensor, its wiring, or the PCM is faulty, leading to issues with engine timing and performance.
⚠️ Before You Begin (Safety First)
Always ensure the vehicle is safely parked and turned off before attempting any repairs. Disconnect the battery's negative terminal to prevent accidental electrical shorts or injury. Allow the engine to cool down completely before working on engine components.
Common Symptoms
- Check Engine Light illuminated
- Rough idling or poor engine performance
- Engine misfires
- Reduced fuel economy
- Difficulty starting the engine
- Engine stalling
Common Causes
- Faulty Camshaft Position Sensor B (Bank 2)
- Damaged or corroded wiring/connector to the sensor
- Short to voltage in the sensor circuit
- Poor electrical connection
- Faulty Powertrain Control Module (PCM) (less common)
Frequently reported on: General/Universal
Diagnostic Steps
- Visually inspect the Camshaft Position Sensor B and its wiring harness for any signs of damage, fraying, or corrosion, particularly near the connector on Bank 2.
- Check the sensor's electrical connector for a secure fit and clean contacts. Disconnect and reconnect to ensure a good connection.
- Using a multimeter, test the voltage at the sensor's connector according to your vehicle's service manual specifications. Look for a short to voltage.
- If the sensor or wiring appears faulty, replace the Camshaft Position Sensor B. Ensure it's the correct sensor for Bank 2.
- Clear the P0395 code using an OBD-II scanner and test drive the vehicle to see if the code returns.
👨🔧 When to Call a Professional
If you're unsure about diagnosing electrical circuits, or if replacing the sensor doesn't resolve the issue, consult a professional mechanic. A misdiagnosis or incorrect repair could lead to further engine damage.
Commonly Asked Questions
What is Bank 2?
Bank 2 refers to the side of the engine that does not contain cylinder #1. This is typically the passenger side on many V6 or V8 engines.
Can I drive with a P0395 code?
While it might be possible to drive short distances, it's not recommended. Driving with this code can lead to poor engine performance, increased fuel consumption, and potentially further engine damage if ignored.
How do I locate the Camshaft Position Sensor B on Bank 2?
The exact location varies greatly by vehicle make and model. Consult your vehicle's service manual or a reliable online resource specific to your car's year, make, and model for precise sensor location.
Is it possible for a dirty sensor to cause this code?
While less common for a 'circuit high' input, a severely fouled or damaged sensor could potentially send incorrect signals. However, circuit issues (wiring, connector, internal sensor failure) are more typical causes for this specific code.
Could this be related to a timing issue?
It's less likely to be a direct timing chain/belt issue causing a 'circuit high' input. The code points more towards an electrical fault within the sensor or its circuit. However, a timing issue could indirectly affect the sensor's reading if it's struggling to detect the cam position accurately, but usually, a different code would appear.