The most common causes of B1231 include: Electrical connector corrosion or damage; Control module communication error; Switch or actuator failure; Wiring short circuit or open circuit. A professional OBD-II scan tool is recommended for accurate diagnosis.

Recommended steps to address B1231: (1) Monitor the situation and service at your next scheduled visit (2) Inspect the affected electrical component and its wiring (3) Check for water intrusion in connector areas. Always consult a qualified EV technician for high-voltage system repairs.

Is it safe to drive with B1231?

B1231 is a caution-level code. It is generally safe to continue driving short distances, but have it inspected at your next scheduled service visit.

B1231

Caution

Longitudinal Acceleration Threshold Exceeded

Severity

Caution

What does B1231 mean?

Fault code B1231 means "Longitudinal Acceleration Threshold Exceeded". It is a manufacturer-specific diagnostic trouble code (DTC) in the body electronics system, classified as "body" 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

Electrical connector corrosion or damage
Control module communication error
Switch or actuator failure
Wiring short circuit or open circuit

Recommended Actions

1 Monitor the situation and service at your next scheduled visit
2 Inspect the affected electrical component and its wiring
3 Check for water intrusion in connector areas