Description of DTC P1570
OBD2 Error Codes

P1570 (Volkswagen, Audi, Skoda, Seat) Engine control module (ECM) - immobilizer active

PP1570 – OBD-II Trouble Code Technical Description

Trouble code P1570 indicates that the engine control module (ECM) immobilizer is active in Volkswagen, Audi, Skoda, Seat vehicles.

What does the fault code mean P1570?

Trouble code P1570 indicates that the engine control module (ECM) immobilizer is activated in Volkswagen, Audi, Skoda, and Seat vehicles. An immobilizer is a security system that prevents your vehicle from starting without the correct key or authorization. When the immobilizer is active, the engine will not start, and this protects the car from theft. When trouble code P1570 appears, it means that the immobilizer system has been activated and the ECM was unable to recognize the key or chip. As a result of the immobilizer activation, the vehicle may refuse to start or start, which can cause inconvenience and problems for the owner.

Fault code P1570

Possible reasons

Possible causes of the P1570 trouble code include the following:

  • Faulty or discharged immobilizer key: If the key battery is low or the key itself is damaged, the ECM may not recognize it.
  • Problems with the transponder chip: The transponder chip in the key may be damaged or incorrectly programmed.
  • Faulty immobilizer receiver: The receiver installed in or near the ignition switch may be faulty and not read the signal from the key.
  • Problems with wiring or connectors: Damaged or corroded wires and connectors may prevent proper communication between the key and the ECM.
  • Errors in ECM software: Software glitches in the engine control module may result in incorrect key recognition.
  • Defective engine control module (ECM): The ECM itself may be damaged or faulty, causing problems with key recognition.
  • Problems with other immobilizer system components: Other system components, such as the immobilizer antenna or immobilizer control module, may be faulty.
  • Reprogramming keys or modules: If the keys or modules have been recently reprogrammed, there may be errors in their synchronization with the immobilizer system.

To accurately determine the cause of the problem, a detailed diagnosis of the immobilizer system and its associated components is required.

What are the symptoms of a fault code? P1570?

Symptoms for DTC P1570 may include the following:

  • Inability to start the engine: The most obvious symptom is that the engine will not start. The immobilizer blocks the ignition system, preventing the car from starting.
  • Immobilizer indicator on the dashboard: The immobilizer light on the dashboard may illuminate or flash, indicating a problem with the security system.
  • Error message on display: Some vehicle models may display an error message on the display related to the immobilizer system or a problem with the key.
  • Sounds or warnings: The vehicle may beep or provide other warnings that the immobilizer system is malfunctioning.
  • Temporary engine operation: In rare cases, the engine may start but then quickly stall, indicating problems with the immobilizer system recognizing the key.

These symptoms indicate the need to immediately diagnose and repair the problem with the immobilizer system to restore normal vehicle operation.

How to diagnose a fault code P1570?

The following steps are recommended to diagnose DTC P1570:

  1. Scanning trouble codes: Use the OBD-II diagnostic scanner to read trouble codes in the engine management system. Verify that code P1570 is indeed present.
  2. Check key: Check the condition of the immobilizer key battery and its correctness. Try using a different key if possible to rule out problems with a specific key.
  3. Checking wiring and connectors: Inspect the wiring and connectors connecting the immobilizer, receiver and ECM. Make sure they are not damaged, broken or corroded.
  4. Diagnostics of the immobilizer receiver and antenna: Check the receiver installed in the ignition switch, as well as the immobilizer antenna for malfunctions.
  5. ECM diagnostics: Diagnose the engine control module (ECM) for errors and malfunctions related to the immobilizer function.
  6. Software check: Check the ECM software for updates or errors that may be related to immobilizer operation.
  7. Checking other immobilizer system components: If necessary, check other components of the immobilizer system, such as the antenna and the immobilizer control module.

Once the cause of the malfunction has been identified, it is recommended that appropriate repairs or replacement of the defective components be carried out. If diagnosis is beyond your skill level, it is best to contact a qualified auto mechanic or service center for further action.

Diagnostic errors

When diagnosing DTC P1570, the following errors may occur:

  • Misinterpretation of symptoms: Some symptoms, such as the engine being unable to start, may be due to problems other than the immobilizer. Misinterpretation of symptoms can lead to misdiagnosis and replacement of unnecessary components.
  • Skip key and battery check: A broken key or a dead key battery may be causing immobilizer problems. Skipping the condition of the key and its battery may result in an incorrect diagnosis.
  • Insufficient checking of wiring and connectors: Damaged wiring or connectors can cause problems with communication between immobilizer system components. Insufficient inspection of wiring and connectors may result in missing the root cause of the problem.
  • ECM Diagnosis Failed: Skipping an Engine Control Module (ECM) diagnosis or misinterpreting its status may result in an incorrect diagnosis.
  • Skip checking other system components: Immobilizer problems can be caused not only by a faulty ECM or key, but also by other system components such as the immobilizer receiver or antenna. Skipping checks on these components may result in missing the root cause of the problem.

To avoid these errors, it is recommended to carry out a comprehensive diagnosis and carefully check each component of the immobilizer system, as well as follow professional instructions and recommendations.

How serious is the fault code? P1570?

Trouble code P1570 is not critical or dangerous to driving safety, but can cause serious inconvenience to the vehicle owner. For example, if the immobilizer is activated and the car does not start, this can create problems moving the car or performing daily activities.

It is important to note that P1570 immobilizer activation may be a sign of other problems with the vehicle's electrical system or with the immobilizer itself. In some cases, this may be due to the key, ECM, or other safety system components not functioning properly.

Although P1570 does not pose a direct threat to the safety of the driver or passengers, it is necessary to correct the problem to restore normal vehicle operation and avoid possible inconveniences and restrictions in use.

What repair will help eliminate the code? P1570?

Troubleshooting DTC P1570 may include the following:

  1. Checking and replacing the key: If the immobilizer key is not recognized by the ECM, you need to check the condition of the key and its battery. If necessary, the key should be replaced with a new one or reprogrammed.
  2. Check and replace ECM: If the problem is related to the ECM, it is necessary to diagnose and, if necessary, replace or reflash the engine control unit.
  3. Checking wiring and connectors: Inspect the wiring and connectors associated with the immobilizer system. Check them for damage, breaks or corrosion. Replace or repair if necessary.
  4. Checking and replacing the immobilizer receiver: Check the operation of the immobilizer receiver installed in the ignition switch. Replace or repair if necessary.
  5. ECM Software Check: Check the ECM software for updates or errors. If necessary, update or reflash the ECM.
  6. Diagnostics of other system components: Check other immobilizer system components such as antenna and immobilizer control module. Replace or repair if necessary.

Repairs should be carried out by a qualified technician as incorrect handling of electrical components may result in additional problems or damage. If you are not confident in your skills, it is better to contact an authorized service center for diagnosis and troubleshooting.

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