B0070
B0070: Body Control Module (BCM) Security System Malfunction
📖 What Does B0070 Mean?
The Body Control Module (BCM) has detected a security system malfunction, which may be caused by a faulty BCM, a problem with the security system wiring, or a malfunctioning security system component.
Symptoms
Car won't start, alarm sounds randomly, security lights flash on and off, or the car's computer displays a security-related error message.
Common Causes
Faulty BCM, security system wiring issues, malfunctioning security system component, or a problem with the car's key fob.
Possible Solutions
1. Check the security system wiring for any damage or corrosion and repair or replace as needed. 2. Update the BCM software if necessary. 3. Replace the faulty BCM or security system component.
Recommended Parts & Tools
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📦 Parts Needed
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Frequently Asked Questions about B0070
How serious is B0070?
This code has a medium severity level. This should be diagnosed and repaired soon to prevent further issues.
Can I drive with B0070?
You can typically drive short distances, but have it diagnosed as soon as possible.
How much does it cost to fix B0070?
Repair costs vary depending on the root cause, but typically range from $100-300 including parts and labor.
Related Diagnostic Codes
Other codes that may appear with B0070
Airbag System Malfunction (B0000)
Body System Code B0001: Climate Control Malfunction
Body System Code B0002: Door Locks Malfunction
Body System Code B0003: Windows
Seat Position Sensor Malfunction
Body System Code B0005: Lighting Malfunction
💡 Why These Codes Are Related:
- • Similar Issues: Same root cause or component failure
- • Related Problems: Often occur together due to system interactions
- • Sequential Codes: Progressive failure stages or multiple sensors
- • Same System: Components within the same automotive system