I did some research on the VW, P1570 error code, and here’s what I found. This issue usually involves the immobilizer system, which prevents your car from starting properly. Let’s break it down simply with some explanations and solutions.
What is the P1570 Error Code?
The P1570 error code is related to the car’s immobilizer system. The immobilizer is a security system that prevents the engine from starting if it doesn’t recognize the key or if there’s an issue with certain components like the ECU (Engine Control Unit). The main symptom is that the engine may start but stall almost immediately.
Possible Symptoms of P1570:
| Symptom | Explanation |
|---|---|
| Engine starts but stalls immediately | The car will briefly start but then shut off quickly, which could indicate a problem with the immobilizer system. |
| No engine start | Sometimes, if the immobilizer is faulty, the engine won’t start at all. |
Possible Causes of P1570:
| Cause | Explanation |
|---|---|
| Key(s) not matched | If the car’s key isn’t properly synced with the immobilizer system, it can prevent the engine from running properly. |
| Instrument Cluster not matched | The instrument cluster (where you see the car’s speedometer and other info) needs to match with the ECU for proper operation. |
| ECU not matched | The Engine Control Unit (ECU) must be correctly paired with the car’s system to allow the engine to function. |
| ECU Power Supply faulty | If the ECU isn’t getting enough power due to a faulty relay or wiring, the engine won’t start or stay on. |
How to Fix P1570:
Here are some steps to try if you encounter the P1570 error code:
| Step | Action |
|---|---|
| Check for Fault Codes in Immobilizer | Start by scanning the immobilizer system for any other related fault codes. |
| Check Measuring Values | Check the immobilizer measuring values, usually found in the instrument cluster or immobilizer control module. |
| Match Key/Instrument Cluster/ECU | Ensure the key, instrument cluster, and ECU are properly matched. You might need to have them reprogrammed. |
| Check ECU Power Supply (Relay) | Inspect the ECU’s power supply and check the relay for faults. It’s crucial for the engine to run. |
Special Notes:
-
Verify it’s an Immobilizer Issue:
If the engine doesn’t start at all, it might not be the immobilizer causing the problem. The issue might be with something else, like the fuel system or ignition. -
Cold Booting:
Sometimes, to reset the system, disconnect both battery cables. Then, briefly short the cables together for about 15 seconds. Reconnect the battery afterward. This might help reset the immobilizer system. -
Check Battery Health:
A weak or faulty battery can cause problems with the immobilizer system. Ensure your battery is in good condition before diving deeper into diagnostics.
