Engine-CodesToyota – P0392 Toyota

P0392 Toyota Code - Camshaft Position Sensor 'B' Circuit Low Bank 2

Quick Answer

The P0392 diagnostic trouble code for Toyota vehicles indicates a problem with the Camshaft Position Sensor 'B' Circuit Low in Bank 2. Common causes include Faulty camshaft position sensor, Damaged wiring or connectors in the sensor circuit, ECM malfunction. 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
P0392 Toyota indicates Camshaft Position Sensor 'B' Circuit Low Bank 2.
Common causes
Common causes include Faulty camshaft position sensor, Damaged wiring or connectors in the sensor circuit, ECM malfunction.
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.
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code P0392 Toyota Description

The P0392 diagnostic trouble code for Toyota vehicles indicates a problem with the Camshaft Position Sensor 'B' Circuit Low in Bank 2. The camshaft position sensor is a crucial component that monitors the position of the camshaft in relation to the crankshaft, allowing the engine control module (ECM) to accurately control fuel injection and ignition timing. In this case, the 'B' circuit low fault means that the signal from the camshaft position sensor in Bank 2 is registering a lower voltage than expected by the ECM.

OBDII Code P0392 Toyota - Camshaft Position Sensor 'B'  Circuit Low Bank 2
P0392 Toyota Code - Camshaft Position Sensor 'B' Circuit Low Bank 2

Common Causes of P0392 Toyota

  1. Faulty camshaft position sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. ECM malfunction
  4. Mechanical issue with the camshaft
  5. Poor electrical connection or corrosion in the sensor circuit

Symptoms of P0392 Toyota

  1. Engine misfires or rough idling
  2. Decreased engine performance
  3. Stalling or difficulty starting the engine
  4. Increased fuel consumption
  5. Check Engine Light illuminated on the dashboard

How to Fix P0392 Toyota

  1. Begin by diagnosing the specific cause of the low voltage signal from the camshaft position sensor using a scan tool to retrieve the fault code and test the sensor's output.
  2. Inspect the wiring and connectors in the sensor circuit for any damage, corrosion, or loose connections. Repair or replace as necessary.
  3. Test the camshaft position sensor for proper operation and replace if it fails to provide the correct voltage output.
  4. Clear the fault code from the ECM's memory and perform a test drive to ensure the issue has been resolved.
  5. If the problem persists, further diagnostic procedures may be required to identify any underlying mechanical issues with the camshaft or ECM.

Cost to Fix P0392 Toyota

The typical repair costs for addressing a Camshaft Position Sensor 'B' Circuit Low Bank 2 issue can vary depending on the specific cause of the fault and the labor rates at the auto repair shop. Generally, replacing a faulty camshaft position sensor or repairing wiring/connectors can range from $100 to $300 in parts cost, with additional labor charges ranging from $100 to $300. Overall, the total repair cost for this issue may fall between $200 and $600. However, it's advisable to consult with a reputable auto repair shop for a more accurate estimate based on your vehicle's make and model, as well as the local labor rates in your area.

Tech Notes for P0392 Toyota

Sometimes and in some models, low battery voltage or a weak starter can trigger a Camshaft Position Sensor code.

When is the Code Detected?

The camshaft position sensor signal is sent the Engine Control Module (ECM) is too low

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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.

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