Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that a part of the car's computer isn't getting enough power to work properly.
The Electronic Control Module (ECM) detected a low voltage in the sensor supply circuit A.
P1570 indicates that the ECM has detected a low voltage condition in the sensor supply circuit labeled 'A'. This circuit is responsible for providing power to certain sensors, and a low output can affect the performance of these sensors.
• Check Engine Light is on
• Poor engine performance
• Inconsistent or rough idling
• Faulty ECM
• Wiring issues such as shorts or open circuits
• Faulty sensor connected to the supply circuit
ECM: Electronic Control Module - the computer that controls various engine functions.
Sensor: A device that detects or measures a physical property and records, indicates, or otherwise responds to it.
• Use a scan tool to verify the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the voltage output of the ECM sensor supply circuit.
• Repair or replace damaged wiring or connectors.
• Replace the faulty sensor if identified.
• Replace or reprogram the ECM if necessary.
• OBD-II scan tool
• Multimeter
• Basic hand tools
$100 - $1000 depending on the specific issue and parts required
Moderate
• Volkswagen Passat
• Audi A4
• Mercedes-Benz C-Class
• Regularly inspect and maintain wiring harnesses.
• Ensure ECM updates are performed as recommended.
• Avoid exposure of electrical components to moisture.
Sensor Issue
• Do not ignore the Check Engine Light.
• Consult a professional mechanic if unsure.
• Regularly service your vehicle to avoid such issues.
Check with your vehicle manufacturer for warranty coverage on ECM-related repairs.
This code has been associated with sensor supply issues in vehicles with complex electronic systems.
Moderate – It should be addressed soon to prevent further engine performance issues.
Driving with a malfunctioning ECM can lead to safety issues and is not recommended.
• Engine running
• All electrical components in normal operating state
The ECM is typically located in the engine compartment or under the dashboard.
Q: Can I drive with a P1570 code?
A: It's not recommended as it can lead to poor engine performance and potential safety issues.
Q: What happens if I ignore this code?
A: Ignoring this code can lead to further engine issues and potentially more costly repairs.
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