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P0394 Dodge Code - Camshaft Position Sensor Intermittent Bank 2 Sensor 2

Quick Answer

The circuits of the Camshaft Position (CMP) Sensor include a 5-Volt reference circuit supplied by the Powertrain Control Module (PCM), a low reference circuit, and an output signal circuit. Common causes include Low engine oil, Faulty Camshaft Position (CMP) Sensor, Camshaft Position Sensor harness is open or shorted. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0394 Dodge indicates Camshaft Position Sensor Intermittent Bank 2 Sensor 2.
Common causes
Common causes include Low engine oil, Faulty Camshaft Position (CMP) Sensor, Camshaft Position Sensor harness is open or shorted.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code Popularity 960
How popular is this code, among other codes? Low
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Table of contents Created and updated by William Orellana on Jun 15, 2023
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Code P0394 Dodge Description

The circuits of the Camshaft Position (CMP) Sensor include a 5-Volt reference circuit supplied by the Powertrain Control Module (PCM), a low reference circuit, and an output signal circuit. The CMP Sensor is a digital output integrated circuit sensing device that is internally magnetically biased. It detects changes in magnetic flux between the high and low points of a tone wheel connected to the camshaft. When each tooth on the tone wheel passes by the CMP Sensor, the sensor electronics use the resulting change in the magnetic field to generate a digital output pulse. The sensor produces a digital ON/OFF DC voltage pulse with a frequency that varies depending on the number of output pulses per revolution of the camshaft, corresponding to the pattern on the camshaft tone wheel. The speed of the camshaft determines the frequency of the CMP Sensor output. The PCM interprets the tooth pattern to determine the position of the camshaft. This information is then utilized to synchronize the engine's ignition timing and fuel injection events. Additionally, the PCM uses the CMP Sensor output data to ascertain the relative position of the camshaft to the Crankshaft, enabling control of the CMP Actuator if it is present.
The Diagnostic Trouble Code (DTC) will be set if, during cranking, at least 2.5 seconds have elapsed with a Crankshaft Position Sensor signal present but no Camshaft Position Sensor signal or with the engine running, the Camshaft Position Sensor signal is lost for at least 0.4 seconds with a Crankshaft Position Sensor signal present.
OBDII Code P0394 Dodge - Camshaft Position Sensor Intermittent Bank 2 Sensor 2 - AutoCodes.com
P0394 Dodge Code - Camshaft Position Sensor Intermittent Bank 2 Sensor 2
What does this mean?

What are the Possible Causes of the DTC P0394 Dodge?

  • Low engine oil
  • Faulty Camshaft Position (CMP) Sensor
  • Camshaft Position Sensor harness is open or shorted
  • Camshaft Position Sensor circuit poor electrical connection
  • Faulty Powertrain Control Module (PCM)
  • Camshaft Tone Wheel loose/damaged or misaligned
  • Dead (Weak) battery

How to Fix the DTC P0394 Dodge?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

In the event of a failure in either the Crankshaft Position (CKP) Sensor or Camshaft Position (CMP) Sensor, the engine can still start. The Powertrain Control Module (PCM) is capable of determining the engine position and initiating startup based on one of these two inputs. However, there may be a small delay in starting as the PCM needs time to establish synchronization. If either the CKP or CMP Sensor signals are absent during engine cranking, a Diagnostic Trouble Code (DTC) is recorded, and the Malfunction Indicator Lamp (MIL) lights up.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0394 Dodge code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0394 Dodge Code

What does the OBDII code P0394 mean on a Dodge?

The P0394 code indicates an intermittent issue with the camshaft position sensor on Bank 2, Sensor 2, which monitors the camshaft's position to ensure proper engine timing.

What are the symptoms of a P0394 code on a Dodge?

Symptoms may include rough idling, engine misfires, reduced fuel efficiency, hesitation during acceleration, or the Check Engine Light turning on.

What causes the P0394 code to appear on a Dodge?

Common causes include a faulty camshaft position sensor, damaged wiring or connectors, issues with the timing components, or a malfunctioning engine control module (ECM).

Can I drive my Dodge with a P0394 code?

While the vehicle may still be drivable, continuing to drive with this code can worsen engine performance and potentially cause long-term damage to the engine.

How can I diagnose a P0394 code on my Dodge?

Diagnosis typically involves using an OBDII scanner to confirm the code, inspecting the camshaft position sensor and its wiring, and checking the timing components for proper alignment.

How do I fix a P0394 code on a Dodge?

Repairs may include replacing the camshaft position sensor, repairing damaged wiring or connectors, resetting the ECM, or addressing issues with the timing chain or belt.

What tools are needed to fix a P0394 code on a Dodge?

You may need an OBDII scanner, basic hand tools, a multimeter for testing electrical connections, and possibly a repair manual specific to your Dodge model.

How much does it cost to fix the P0394 code on a Dodge?

The cost can vary but typically ranges from $100 to $300 for parts and labor, depending on whether the camshaft position sensor or other components need replacement.

Can a dirty engine cause the P0394 code?

Yes, excessive dirt or oil buildup around the camshaft position sensor can interfere with its operation and result in the P0394 code.

Will clearing the code fix the P0394 issue on a Dodge?

Clearing the code will turn off the Check Engine Light temporarily, but if the underlying issue isn’t resolved, the code will return.

Discuss the causes and fixes for P0394 Dodge OBDII Code

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