Open In B+ Circuit
Table of contents
C2309 TOYOTA Possible Causes
- Faulty Transmission Control ECU Assembly
- Transmission Control ECU harness is open or shorted
- Transmission Control ECU circuit poor electrical connection
- Faulty Auxiliary Battery
How do I fix code C2309 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 C2309 TOYOTA code
The cost of diagnosing the C2309 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)
C2309 TOYOTA Description
Battery voltage will be applied to the +B terminal when the power switch is turned on (IG). When a +B terminal voltage malfunction is detected, the Transmission Control ECU outputs this Diagnostic Trouble Code (DTC).