The most common causes of U1012 include: CAN bus wiring fault; Control module not responding; Communication protocol mismatch; Module power supply issue. A professional OBD-II scan tool is recommended for accurate diagnosis.

Recommended steps to address U1012: (1) Monitor the situation and service at your next scheduled visit (2) Check all control module connections (3) Have the CAN bus wiring inspected for damage. Always consult a qualified EV technician for high-voltage system repairs.

Is it safe to drive with U1012?

U1012 is a caution-level code. It is generally safe to continue driving short distances, but have it inspected at your next scheduled service visit.

U1012

Caution

SCP (J1850) Invalid or Missing Data for Primary Id

Severity

Caution

What does U1012 mean?

Fault code U1012 means "SCP (J1850) Invalid or Missing Data for Primary Id". It is a manufacturer-specific diagnostic trouble code (DTC) in the network communication system, classified as "network" with a severity level of "caution". This is a lower-severity code that should be monitored. Have it checked at your next regular service appointment. This code is defined by the SAE J2012 / ISO 15031-6 standard and applies to OBD-II compliant vehicles sold in the US, EU, and other global markets.

Possible Causes

CAN bus wiring fault
Control module not responding
Communication protocol mismatch
Module power supply issue

Recommended Actions

1 Monitor the situation and service at your next scheduled visit
2 Check all control module connections
3 Have the CAN bus wiring inspected for damage