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P0373 Volkswagen Code - Timing Reference High Resolution Signal 'A' Intermittent/Erratic Pulses

Quick Answer

The P0373 diagnostic trouble code (DTC) in a Volkswagen indicates an issue with the Timing Reference High Resolution Signal 'A' being intermittent or erratic. Common causes include Faulty crankshaft or camshaft position sensors, Wiring harness issues or loose connections, Damaged components in the timing system. 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
P0373 Volkswagen indicates Timing Reference High Resolution Signal 'A' Intermittent/Erratic Pulses.
Common causes
Common causes include Faulty crankshaft or camshaft position sensors, Wiring harness issues or loose connections, Damaged components in the timing system.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P0373 Volkswagen Description

The P0373 diagnostic trouble code (DTC) in a Volkswagen indicates an issue with the Timing Reference High Resolution Signal 'A' being intermittent or erratic. This signal is critical for the proper functioning of the engine's timing system, which ensures that the combustion process occurs at the right moment for optimal performance and efficiency.

OBDII Code P0373 Volkswagen - Timing Reference High Resolution Signal 'A' Intermittent/Erratic Pulses
P0373 Volkswagen Code - Timing Reference High Resolution Signal 'A' Intermittent/Erratic Pulses

Common Causes of P0373 Volkswagen

  1. Faulty crankshaft or camshaft position sensors
  2. Wiring harness issues or loose connections
  3. Damaged components in the timing system
  4. ECM software or hardware malfunction
  5. Corrosion or contamination in the sensor connectors

Symptoms of P0373 Volkswagen

  1. Engine misfires or rough idle
  2. Loss of power or acceleration
  3. Difficulty starting the engine
  4. Increased fuel consumption
  5. Illuminated check engine light

How to Fix P0373 Volkswagen

  1. Perform a thorough diagnostic scan to confirm the P0373 code and identify any other related codes.
  2. Inspect the crankshaft and camshaft position sensors for proper operation and replace if necessary.
  3. Check the wiring harness and connectors for damage or corrosion, repairing or replacing as needed.
  4. Clear the code from the ECM memory and test drive the vehicle to verify that the issue has been resolved.
  5. If the problem persists, consult with a professional technician for further diagnosis and repair.

Cost to Fix P0373 Volkswagen

The typical repair costs for addressing a P0373 code in a Volkswagen can range from $200 to $500, depending on the specific cause of the issue and the labor rates in your area. Parts such as sensors or wiring harnesses may need to be replaced, and labor costs can vary based on the complexity of the repair. It's recommended to get a detailed quote from a reputable auto repair shop to determine the exact cost for your vehicle. Keep in mind that rates can vary based on location, vehicle make and model, and the expertise of the technician.

When is the Code Detected?

Some high resolution pulses are intermittent from the optical sensor to the PCM

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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 P0373 Volkswagen Code

1. What are common symptoms of OBDII code P0373 in a Volkswagen?

- Common symptoms include rough idling, engine misfires, decreased fuel efficiency, and potential stalling while driving.

2. What are possible causes of the Timing Reference High Resolution Signal 'A' Intermittent/Erratic Pulses code in a Volkswagen?

- Possible causes may include a faulty crankshaft position sensor, damaged wiring or connectors, issues with the engine control module (ECM), or timing chain/belt problems.

3. How can I diagnose the cause of OBDII code P0373 in my Volkswagen?

- Diagnosis typically involves using a scan tool to read the code, checking the wiring and connectors related to the crankshaft position sensor, and testing the sensor itself for proper functioning.

4. Can I continue driving my Volkswagen with OBDII code P0373 present?

- It is not recommended to continue driving with this code present, as it can lead to more serious issues like engine damage or complete failure if not addressed promptly.

5. How can I repair OBDII code P0373 in my Volkswagen?

- Repair may involve replacing the crankshaft position sensor, repairing damaged wiring or connectors, resetting the ECM, or addressing any timing chain/belt issues as needed.

6. Are there any DIY tips for fixing OBDII code P0373 in a Volkswagen?

- DIY tips include checking for loose or damaged wiring, ensuring proper sensor connections, and consulting your vehicle's manual for specific troubleshooting steps.

7. What should I do if OBDII code P0373 keeps coming back in my Volkswagen after repair?

- If the code keeps returning, it is recommended to have a professional mechanic perform a thorough inspection to identify any underlying issues that may be causing the recurrence.

8. Is it safe to clear the OBDII code P0373 in my Volkswagen without addressing the underlying problem?

- Clearing the code without fixing the underlying issue may temporarily turn off the check engine light, but the problem will likely persist and could lead to more severe consequences over time.

9. How long does it typically take to repair OBDII code P0373 in a Volkswagen?

- The repair time can vary depending on the exact cause of the code and the complexity of the repair needed, but it can range from a few hours to a full day in some cases.

10. Can OBDII code P0373 in a Volkswagen affect the vehicle's overall performance?

- Yes, this code can impact the vehicle's performance by causing issues with ignition timing, fuel delivery, and overall engine operation, leading to reduced efficiency and potential drivability problems.

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