Description of DTC P1573
OBD2 Error Codes

P1573 (Volkswagen, Audi, Skoda, Seat) Solenoid valve of the left electro-hydraulic engine mount - open circuit

P1573 – OBD-II Trouble Code Technical Description

Trouble code P1573 indicates an open circuit in the left electrohydraulic engine mount solenoid valve in Volkswagen, Audi, Skoda, and Seat vehicles.

What does the fault code mean P1573?

Trouble code P1573 usually indicates a problem with the left electro-hydraulic engine mount solenoid valve in Volkswagen, Audi, Skoda and Seat vehicles. This valve controls oil pressure in the hydraulic mount system, which keeps the engine in place and reduces vibration and noise. A broken valve circuit can result in loss of mount functionality, which can result in unstable engine operation and increased vibration and noise.

Fault code P1573

Possible reasons

Possible reasons for DTC P1573:

  • Broken wiring: The wiring connecting the solenoid valve to the control module or power supply may be damaged or broken.
  • Valve damage: The solenoid valve itself may be damaged or have a mechanical fault, causing it to not operate properly.
  • Problems with electrical components: A malfunction in electrical components such as fuses, relays, or control modules that supply power to the solenoid valve can cause this DTC to appear.
  • Problems with contacts: Corrosion or oxidation of contacts on electrical connectors may result in poor contact, which may cause an open circuit.
  • Mechanical damage: In some cases, mechanical damage, such as from strong shocks or vibrations, can damage the wiring or valve.

To accurately identify the cause, it is necessary to carry out diagnostics using specialized equipment and a thorough analysis of the condition of the vehicle's electrical system.

What are the symptoms of a fault code? P1573?

Symptoms for DTC P1573 may include the following:

  • Increased engine vibration: Since the electro-hydraulic engine mount helps reduce vibration, failure of the electro-hydraulic engine mount can result in increased vibration, especially at idle or when shifting gears.
  • Increased noise level: A faulty mount can result in increased noise levels coming from the engine as vibrations are not properly damped.
  • Engine instability: The engine may become unstable, especially when starting, accelerating or braking, due to insufficient support from the mount.
  • Check Engine indication: The “Check Engine” light on your dashboard may illuminate, indicating a problem with the engine management system.
  • Reduced driving comfort: The driver and passengers may notice decreased comfort due to increased vibration and noise.
  • Errors and trouble codes in the diagnostic scanner: When connecting a diagnostic scan tool, trouble codes related to the engine mount system may be detected, including P1573.

These symptoms may vary depending on the specific vehicle model and operating conditions, but if any of them occur, it is recommended that diagnosis and repair be performed to prevent further damage and ensure safe operation of the vehicle.

How to diagnose a fault code P1573?

To diagnose DTC P1573 and determine the specific cause of the problem, you can follow these steps:

  1. Reading fault codes: Use a diagnostic scan tool to read trouble codes from the vehicle's ECU (Electronic Control Unit). If code P1573 is detected, this will be the first indicator of a problem with the left electro-hydraulic engine mount solenoid valve.
  2. Visual inspection: Check the wiring connecting the solenoid valve to the ECU and the power supply for damage, breaks or corrosion. Carefully inspect the valve itself for visible damage.
  3. Checking electrical connections: Check the quality and reliability of electrical connections, including connector pins, fuses, relays and other electrical components associated with the solenoid valve.
  4. Solenoid Valve Testing: Use a multimeter to check the resistance of the solenoid valve. The resistance must be within acceptable values ​​according to the manufacturer's specifications.
  5. Checking the power circuit: Check the voltage on the power supply to the solenoid valve. Verify that power signals meet manufacturer specifications.
  6. Using diagnostic programs and testers: Some car brands provide specialized programs and testers for diagnosing electrical systems. Using such tools can make the diagnostic process easier.

If the problem cannot be found or resolved on your own, it is recommended that you contact a qualified auto mechanic or service center for professional diagnosis.

Diagnostic errors

When diagnosing DTC P1573, the following errors may occur and may cause the problem to be incorrectly identified:

  • Ignoring other fault codes: Some mechanics may focus only on the P1573 code and not consider other trouble codes that may be related or indicate a wider problem in the system.
  • Incorrect use of diagnostic equipment: Improper use of a diagnostic scanner or multimeter may result in inaccurate readings, making proper diagnosis difficult.
  • Insufficient visual inspection: Skipping a thorough visual inspection of the wiring, connectors, and valve itself may result in missing obvious damage or breaks.
  • Neglecting to check electrical connections: Failure to pay sufficient attention to the condition of connectors and contact groups can leave hidden problems such as corrosion or loose contacts.
  • Incorrect interpretation of test results: Misinterpretation of resistance or voltage measurements may lead to incorrect conclusion about the condition of the solenoid valve or wiring.
  • Failure to take into account technical specifications: Ignoring or not knowing the technical specifications and acceptable values ​​for a specific vehicle model may lead to incorrect diagnosis.
  • Insufficient load testing: Testing the system without load may not reveal problems that only occur when the engine is running.
  • Neglecting to check control modules: Faults in the control module, which controls the operation of the solenoid valve, may be missed by focusing only on the valve and wiring.

To accurately diagnose and resolve P1573, it is recommended that you follow a methodical approach, use the right tools, and consider all possible aspects of the problem. In case of difficulties, you can always turn to specialized sources of information or professionals for help.

How serious is the fault code? P1573?

Trouble code P1573 indicates a problem with the left electro-hydraulic engine mount solenoid valve. Depending on the specific situation and how quickly the problem is detected and resolved, the severity of this code may vary, several aspects to consider:

  • Impact on performance and comfort: Failure of the electro-hydraulic engine mount may result in increased engine vibration, noise and instability. This can affect the ride comfort and handling of the vehicle, especially on long trips.
  • Security: Some malfunctions related to the electro-hydraulic engine mount may affect riding safety. For example, if the mount does not support the engine properly, it can cause the vehicle to become unstable when handling or even cause you to lose control of the vehicle.
  • Potential additional damage: If the problem is not resolved in time, it may cause additional damage to other systems in the vehicle. For example, increased vibrations may cause damage to adjacent engine or exhaust system components.
  • Repair costs: Depending on the cause of the problem and the repairs required, the cost to fix the problem can be significant, especially if the solenoid valve itself is faulty or other components need to be replaced.

Overall, although the P1573 trouble code is not the most critical or dangerous, it still requires careful attention and timely resolution to avoid negative consequences on the safety, performance and longevity of the vehicle.

What repair will help eliminate the code? P1573?

Troubleshooting DTC P1573 depends on the specific cause of this error. Here are some possible repair methods:

  1. Replacing the solenoid valve: If the problem is due to a malfunction of the solenoid valve itself, then replacing it with a new one may solve the problem. After replacement, it is recommended to check the system to ensure its serviceability.
  2. Wiring repair: If the cause is a broken or damaged wiring, it is necessary to repair or replace the damaged sections of the wiring.
  3. Replacing or repairing the control module: In rare cases, the problem may be due to a malfunction of the control module that controls the operation of the solenoid valve. In this case, the module may need to be replaced or repaired.
  4. Cleaning and checking contacts: Sometimes the cause of the error may be poor contact between connectors and contact groups. Cleaning and checking the contacts may help restore normal operation.
  5. Additional diagnostics: In some cases, a more in-depth diagnosis of the system may be required to identify hidden problems or causes that cannot be immediately identified.

After carrying out the necessary repairs, it is recommended to test the system and reset the fault code using a diagnostic scanner. If everything was done correctly, the P1573 code should no longer appear. If the problem persists, further diagnosis or repair may be required. In this case, it is better to contact an experienced auto mechanic or a specialized service center.

How to Read Volkswagen Fault Codes: Step-by-Step Guide

Add a comment