Low — S1Toyota Corolla · economy tier
B0074 on Toyota Corolla
The B0074 diagnostic trouble code on a Toyota Corolla indicates second row center seat belt pretensioner deployment control. For Toyota vehicles, this code is commonly triggered by faulty seat motor/module — most common cause, test before replacing or damaged or corroded wiring/connector in the power seat system circuit.
Can You Still Drive?
Safe to drive. Check at your convenience.
Estimated Repair Cost
$100 – $800
for Toyota Corolla
Common on This Vehicle?
B0074 appears less frequently on Toyota Corolla models but should still be diagnosed promptly.
Repair Costs for B0074 on Toyota Corolla
These repairs are commonly needed to resolve the B0074 code on a Toyota Corolla:
See all repair costs for Toyota Corolla →Symptoms on Toyota Corolla
- •Power seat won't move in one or more directions
- •Seat memory settings not saving or recalling correctly
- •Diagnostic trouble code (DTC) stored in module memory
- •Fault may be intermittent — code may clear itself and reappear
- •Reduced vehicle functionality related to the power seat system
Common Causes
- •Faulty seat motor/module — most common cause, test before replacing
- •Damaged or corroded wiring/connector in the power seat system circuit
- •Blown fuse or faulty relay for the power seat system
- •Poor ground connection — check and clean all related ground points
- •Control module fault — rare but possible, only consider after ruling out simpler causes