P0393 Toyota Code - Camshaft Position Sensor 'B' Circuit High Bank 2
Quick Answer
The P0393 code for Toyota vehicles indicates a problem with the Camshaft Position Sensor 'B' Circuit High Bank 2. Common causes include Faulty camshaft position sensor, Damaged wiring or connectors in the camshaft position 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
- P0393 Toyota indicates Camshaft Position Sensor 'B' Circuit High Bank 2.
- Common causes
- Common causes include Faulty camshaft position sensor, Damaged wiring or connectors in the camshaft position 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.
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Code P0393 Toyota Description
The P0393 code for Toyota vehicles indicates a problem with the Camshaft Position Sensor 'B' Circuit High Bank 2. The camshaft position sensor is a vital component of the engine management system, responsible for monitoring the position of the camshaft to ensure proper timing of the engine's valves. In this case, the code specifically points to a high voltage reading in the circuit associated with the camshaft position sensor on bank 2, indicating a potential issue with the sensor itself or the wiring/connectors.
Common Causes of P0393 Toyota
- Faulty camshaft position sensor
- Damaged wiring or connectors in the camshaft position sensor circuit
- ECM malfunction
- Poor electrical connections
- Engine overheating causing sensor damage
Symptoms of P0393 Toyota
- Engine misfires
- Rough idling or hesitation during acceleration
- Decreased fuel efficiency
- Engine stalling
- Illuminated check engine light
How to Fix P0393 Toyota
- Begin by visually inspecting the wiring and connectors associated with the camshaft position sensor 'B' circuit on bank 2 for any visible damage or corrosion.
- Test the camshaft position sensor using a multimeter to ensure it is functioning correctly.
- If the sensor is faulty, replace it with a new OEM or high-quality aftermarket sensor.
- Clear the diagnostic trouble codes (DTCs) from the ECM using a scan tool and perform a road test to verify that the issue has been resolved.
- If the problem persists, further diagnostic testing may be required to identify any underlying electrical issues or ECM malfunctions.
Cost to Fix P0393 Toyota
The typical repair costs for addressing a P0393 code on a Toyota vehicle can range from $150 to $400, including parts and labor. The cost of the camshaft position sensor itself can vary depending on the vehicle model and the brand of the sensor. Labor rates at auto repair shops typically range from $80 to $150 per hour, but rates may vary based on the location and the shop's expertise. It's advisable to obtain quotes from multiple reputable repair shops to get a more accurate estimate for this repair.
Tech Notes for P0393 Toyota
When is the Code Detected?
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Frequently Asked Questions about P0393 Toyota Code
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Discuss the causes and fixes for P0393 Toyota OBDII Code
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Where is the Camshaft sensor Bank B, Sensor B on a 2007 Toyota Camry 3.5L with Code PO393?
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I have a 2007 Toyota Camry 3.5 L with a code PO393 for camshaft sensor Bank B, sensor B. I checked the wiring from the sensor plug in to the EM with the key on and received the proper 12.7 volts on the center wire and 5.0 volts on both sides. I was advised to replace the camshaft sensor and did so with no results. The code stored says the ECM is receiving a high voltage reading and it could be the camshaft sensor, harness open or shorted, cam sensor circuit poor electrical connection, faulty starter motor, starting system circuit or dead or weak battery.
I have replaced the battery, cam sensor, clead the MAF sensor and found corn kernels and debris in the air cleanwer filter (a lot which basically restricted air flow but is clean when corn was removed). I have exerienced diffeent codes but basically the PO393 is the only one active now. The early symptoms were the check engine light which would go on randomly when starting but would work fine for days. Now light is on and when I remove the codes the Engine light goes off and then back on. This engine has 4 camshafts and 4 sensors, supposedly all the same. I would like to make sure I have located the correct Bank B sensor. Thank You. Don. -
Here is the location of the sensors (Click on the image to enlarge). Other than the sensor, I have not seen any other component setting the code.
Exhaust = Sensor 'B'
Left = Bank 2
Click here to enlarge image
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