PACCAR MX (2004 Emissions) Fault Code: P1158 Wheel Speed, Front Axle, Left - Data Erratic, Intermittent or Incorrect

SET CONDITIONS:
The ECU detects that the speed of the left-front axle wheel speed sensor is > 160 km/h [99 mph].

DIAGNOSTIC CONDITION:
This diagnostic runs continuously when the ignition is on.

CORRESPONDING OBD READINESS MONITOR:
None

RESET CONDITION:
This DTC changes to inactive when a normal wheel speed is detected.

REPAIR VERIFICATION:
1. Clear all DTCs.
2. Test drive or operate the vehicle to meet the diagnostic conditions and set conditions.
3. Did the DTC come back?
- No, repair successful
- Yes, repair unsuccessful

POSSIBLE CAUSES:
Wheel speed sensor defect

ADDITIONAL INFORMATION:
The vehicle was driven excessively fast or the wheel speed sensor is malfunctioning.

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