B1000 – Electronic Control Unit

B1000 Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

B1000 Possible Causes

Faulty Electronic Control Unit (ECU),Electronic Control Unit (ECU) harness is open or shorted,Electronic Control Unit (ECU) circuit poor electrical connection

B1000 Description

The internal fault detection is handled inside the Electronic Control Unit (ECU). No external circuits are involved.