B2947
Security System Sensor Power Circuit Low
B2947 is an OBD-II diagnostic trouble code meaning: Security System Sensor Power Circuit Low. Common causes: damage to the security system wiring harness, short circuit in the sensor circuit. Estimated repair cost: $56–167.
Symptoms
- The security light on the dashboard is on
- The security system may not work in an emergency
- The error may be accompanied by other security trouble codes
Causes
- Damage to the security system wiring harness
- Short circuit in the sensor circuit
- Malfunction of security system sensors
- Problems with the security control unit
- Corrosion of contacts in system connectors
How to Fix
- Diagnose the security system using a scanner
- Check the integrity of the security system wiring harness
- Check the voltage in the sensor power supply circuit
- Inspect connectors and contacts for corrosion
- Replace damaged components if necessary
Related codes
FAQ
What does the B2947 code mean?
B2947 is an OBD-II diagnostic trouble code that indicates: Security System Sensor Power Circuit Low
What causes a B2947 error code?
The most common causes of B2947 include: Damage to the security system wiring harness; Short circuit in the sensor circuit; Malfunction of security system sensors; Problems with the security control unit.
How do I fix a B2947 diagnostic trouble code?
To fix B2947: Diagnose the security system using a scanner. Check the integrity of the security system wiring harness. Check the voltage in the sensor power supply circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B2947?
Do not drive — repair immediately
How much does it cost to fix B2947?
The estimated repair cost for B2947 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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