Engine Switch Circuit Malfunction
Table of contents
B2278 TOYOTA Possible Causes
- Faulty Engine Switch
- Engine Switch harness is open or shorted
- Engine Switch circuit poor electrical connection
- Faulty Main Body ECU
How do I fix code B2278 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 B2278 TOYOTA code
The cost of diagnosing the B2278 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
- Engine Light ON (or Service Engine Soon Warning Light)
B2278 TOYOTA Description
This Diagnostic Trouble Code (DTC) is output when a malfunction is detected between the Main Body ECU and the engine switch, or either of the switches inside the engine switch is malfunctioning.