C0278 (blink 11) on Toyota Corolla E120: Open in ABS Solenoid Relay Circuit

Short answer: C0278 means “Open in ABS Solenoid Relay Circuit”. The car’s computer has found a fault in the ABS with BA & EBD system and turns on the ABS warning. First check: ABS solenoid relay; ABS solenoid relay circuit.

Code

C0278 · blink 11

System

ABS with BA & EBD

Dashboard light

ABS warning

Applies to

All E120 with ABS (BA & EBD)

Confidence

high (official Toyota RM821E)

Source

toyotamanuals.gitlab.io

Symptoms and when it is set

1. When solenoid relay is turned ON, relay contact is OFF for 0.2 sec. or longer. Immediately after IG1 is turned ON, when solenoid relay is turned OFF, relay contact is ON for 0.2 sec. or longer.

Likely causes

1. ABS solenoid relay; ABS solenoid relay circuit

Related on this car

• All fault codes for this car
• Warning lights
• Where the parts are (parts map)
• Common problems

Same code on other cars

• C0278 · Toyota Passo (1st gen)
• C0278 · Toyota Vitz (1st gen)
• C0278 on all cars compared

← C0274/14 C0279/12 →

Clearing the code does not fix the fault. If it comes back, the problem is still there. For brakes, airbags and steering, see a trained mechanic.