Code 21-01 often indicates a failure or signal malfunction with the Left Front ABS Wheel Speed Sensor .
: On models like the Honda Inspire or Insight, code 21-01 often signals a failure in the EPS control unit or its power supply, which can cause the steering to lock up or lose assistance. honda 21-01
This bulletin addresses a warranty extension for vehicles where the Malfunction Indicator Light (MIL) comes on with DTCs P0420/P0430 (catalytic converter efficiency), P030x (engine misfire), or P219A/B (air-fuel ratio imbalance). It provides a repair path for owners dealing with these persistent engine performance codes. Code 21-01 often indicates a failure or signal
: The 2001 model year was particularly susceptible to premature transmission failure. It provides a repair path for owners dealing
: In some contexts, it refers to a VTEC solenoid failure , where the solenoid sticks due to oil sludge or electrical faults, leading to poor engine performance.
: Automotive companies frequently release concept vehicles or special edition models. These can have unique designations that might not follow the standard naming conventions for production vehicles.
In some older models like the 2004 CR-V, similar codes (like 21-1) point toward malfunctions in the left front seat belt buckle or its associated wiring. 3. Motorcycle Parts Reference (E-21-01)