B3970
Output Driver Module Performance
B3970 is an OBD-II diagnostic trouble code meaning: Output Driver Module Performance. Common causes: output control module malfunction, problems with wiring harness or contacts. Estimated repair cost: $56–167.
Symptoms
- Check Engine light comes on
- Incorrect operation of actuators (for example, solenoids, relays)
- Idle problems
- Deterioration of vehicle dynamics
Causes
- Output control module malfunction
- Problems with wiring harness or contacts
- Short circuit or open circuit in control circuit
- Low module supply voltage
How to Fix
- Check the module supply voltage
- Inspect the wiring harness and contacts for damage
- Conduct module diagnostics using a scanner
- Replace module if necessary
Related codes
Error B3970 by Vehicle Brand
FAQ
What does the B3970 code mean?
B3970 is an OBD-II diagnostic trouble code that indicates: Output Driver Module Performance
What causes a B3970 error code?
The most common causes of B3970 include: Output control module malfunction; Problems with wiring harness or contacts; Short circuit or open circuit in control circuit; Low module supply voltage.
How do I fix a B3970 diagnostic trouble code?
To fix B3970: Check the module supply voltage. Inspect the wiring harness and contacts for damage. Conduct module diagnostics using a scanner. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B3970?
Do not drive — repair immediately
How much does it cost to fix B3970?
The estimated repair cost for B3970 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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