What causes B1451 on a Toyota?

Failed A/C compressor solenoid valve Open or short in the solenoid circuit Loose or corroded compressor connector Damaged compressor harness Low refrigerant or a failing compressor

How do I fix B1451 on a Toyota?

Confirm the code and read the A/C data list Check the refrigerant charge and compressor operation Inspect and reseat the compressor solenoid connector Test the solenoid circuit and resistance Replace the solenoid or compressor only after tests fail

B1451 Compressor solenoid circuit fault. The A/C amplifier cannot command the compressor refrigerant compression

Q: What does B1451 mean on a Toyota?

B1451. Compressor solenoid circuit fault. The A/C amplifier cannot command the compressor refrigerant compression. Applies to Toyota, Lexus and Scion models that use this code.

Category: Body
Severity: Body Warning Light
Applies to: Toyota, Lexus and Scion models that use this code

What does B1451 mean on a Toyota?

B1451. Compressor solenoid circuit fault. The A/C amplifier cannot command the compressor refrigerant compression. This Toyota-enhanced code applies to Toyota, Lexus and Scion models that use this code.

Common causes of B1451

Failed A/C compressor solenoid valve
Open or short in the solenoid circuit
Loose or corroded compressor connector
Damaged compressor harness
Low refrigerant or a failing compressor

How to fix B1451

Confirm the code and read the A/C data list
Check the refrigerant charge and compressor operation
Inspect and reseat the compressor solenoid connector
Test the solenoid circuit and resistance
Replace the solenoid or compressor only after tests fail