C1542 · blink 42 – Speed Sensor Malfunction

System: EMPS
Dashboard light: EPS (electric power steering) warning
Check-engine blink code: 42
Market note: EMPS (electric power steering) is not fitted on PK cars; PK cars use hydraulic steering.
Applies to: Cars with electric power steering only. NOT fitted on PK cars: the EPC fig 4502 hydraulic vane pump covers ZZE12#..PKN and NZE120.
Description: Speed Sensor Malfunction
Detection / symptoms: Detection: Speed sensor malfunction
Possible causes: Speed sensor; Combination meter; EMPS ECU
What to check: Workshop check order (RM821E): CHECK POWER STEERING ECU ASSY (EMPS ECU) -> CHECK WIRE HARNESS OPEN AND SHORT CIRCUIT (EMPS ECU − COMBINA-
Confidence: high (official Toyota RM821E)

From the factory service material. Clear the code and test-drive to confirm it returns. Search all fault codes · Common problems · Warning lights