What Does P0395 Mean?
The camshaft position sensor B on bank 2 is reporting a signal voltage that exceeds the expected maximum threshold. This typically indicates a short to voltage in the sensor circuit or a failed sensor outputting a continuously high signal. The driver may notice engine misfires, rough running, hard starting, or reduced power as the ECM cannot accurately determine exhaust camshaft position on bank 2.
Common Causes
35%
Short to battery voltage in the sensor signal wire due to chafing or insulation damage
30%
Failed camshaft position sensor with shorted internal circuitry
20%
Corroded or water-damaged connector causing high-resistance short
15%
ECM internal driver circuit fault on the sensor input
Diagnostic Steps
1
With the engine off and key on, backprobe the camshaft position sensor B (bank 2) signal wire at the ECM connector — voltage should be near 0V or a low reference. If reading near battery voltage (12V+), a short to power exists in the harness.
2
Disconnect the sensor connector and recheck voltage at the ECM side of the harness. If voltage drops to normal, the sensor is internally shorted. If it remains high, the wiring has a short to a power source.
3
Inspect the wiring harness routing from sensor to ECM, paying special attention to areas near ignition coil wiring, alternator output, or any power feeds where insulation may be compromised.
4
Measure sensor resistance across terminals — compare to specification (typically 800–1,400 ohms). An open or significantly out-of-range reading confirms sensor failure.
5
If wiring and sensor check good, swap the ECM connector pin assignment with a known-good input to verify the ECM input driver is not failed.
Estimated Repair Cost
$75 - $400
Parts + labor, varies by vehicle and location
The camshaft position sensor B on bank 2 is reporting a signal voltage that exceeds the expected maximum threshold. This typically indicates a short to voltage in the sensor circuit or a failed sensor outputting a continuously high signal. The driver may notice engine misfires, rough running, hard s...
The most common cause of P0395 (Camshaft Position Sensor B Circuit High Input (Bank 2)) is: Short to battery voltage in the sensor signal wire due to chafing or insulation damage
Typical repair costs for P0395 range from $75 to $400, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Driving is possible but not recommended for extended distances. The ECM may enter a fallback timing map which reduces performance and can cause misfires. Risk of stalling exists, particularly at idle or during deceleration. Have the vehicle diagnosed promptly.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0395 to identify the root cause.
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Quick Info
Category
Powertrain
System
Engine Timing / Variable Valve Timing
Difficulty
Type
Generic (SAE)
Recommended Tools
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