Power Supply Drive Circuit
Table of contents
C1257 TOYOTA Possible Causes
- Faulty Brake Booster Pump Assembly
- Brake Booster Pump Assembly harness is open or shorted
- Brake Booster Pump Assembly circuit poor electrical connection
- Faulty Master Cylinder Solenoid (Skid Control ECU)
How do I fix code C1257 TOYOTA?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the C1257 TOYOTA code
The cost of diagnosing the C1257 TOYOTA code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Anti-Lock Brake System (ABS) Warning Light ON
- Engine Light ON (or Service Engine Soon Warning Light)
C1257 TOYOTA Description
The Master Cylinder Solenoid (Skid Control ECU) monitors the Brake Booster Pump Assembly. The Master Cylinder Solenoid (Skid Control ECU) sets the OBDII code when the Brake Booster Pump Assembly is not to factory specifications.