Code Definition

P1258 — VTEC System malfunction

System: Powertrain  |  Type: Manufacturer-Specific  |  Make: Honda

About P1258

P1258 is a manufacturer-specific powertrain diagnostic trouble code recorded for Honda vehicles. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

P1258 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

DTC P1258 is a Honda specific code reporting a VTEC system malfunction, Honda's Variable Valve Timing and Lift Electronic Control. The Powertrain Control Module (PCM) energises the VTEC solenoid valve to apply oil pressure that shifts the rocker arms onto the high lift cam, and it monitors both the solenoid control circuit and the VTEC oil pressure switch to verify operation. P1258 sets when the VTEC system fails to operate correctly, whether from a solenoid circuit fault, a solenoid or oil supply problem, or a pressure switch that does not confirm the commanded state. The driver may notice lo...

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