4203 SPN Fault Code

Name:

Engine Speed Sensor 1 Timing Pattern Status

Description:

This is the timing pattern status of the engine speed sensor signal for sensor 1. The sensor may be sending a speed signal but the pattern may not be valid. Since the speed is considered valid, the error indicator will not be used in the engine speed parameter (SPN 4201). The sensor does give a speed but the pattern is not matched. In this condition, the position of the crank has not been determined so injection is not enabled. The engine speed signal provides both engine speed and crankshaft location information to the engine control. A � Not OK � status may be caused by extra or missing teeth, gear runout, etc.00b = Not OK 01b = OK 10b = Error 11b = Not available Note: This is intended to be used on a service tool for troubleshooting a no start condition.

4203 spn fault code name is Engine Speed Sensor 1 Timing Pattern Status. If you don't take the time to look into 4203 spn fault when it arises, it can add up quickly. One small issue like 4203 can cause a larger component to become damaged without taking the time to investigate. If you suspect your truck is suffering from one of these issues, look into replacing those small components to save money down the road.

Note: The name and description of 4203 code represents text descriptions for faults supported by another coding system and does not necessarily comply with SAE J1939. For a specific engine manufacturer's explanation for codes, please consult the engine's technical manual. See also other spn codes.

4203 SPN Fault Code

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