Question 1

What does P1259 mean?

Accepted Answer

P1259 - VTEC System Malfunction (Honda). Honda-specific: The VTEC variable valve timing system has detected a malfunction. VTEC engages at higher RPM to change cam profiles for more power.

Question 2

What are the symptoms of P1259?

Accepted Answer

Check engine light, Loss of high-RPM power, VTEC doesn't engage, Engine may feel flat above 4,000 RPM

Question 3

What causes P1259?

Accepted Answer

Low oil level, Low oil pressure, Dirty oil, Failed VTEC solenoid, Oil pressure switch failure, Clogged oil passages, VTEC solenoid screen clogged

Question 4

How much does it cost to fix P1259?

Accepted Answer

Typical repair cost: $50-$500. VTEC relies on oil pressure. Check oil level and condition first. The VTEC solenoid has a small filter screen that clogs over time — removing and cleaning it is a $0 fix that works often. Use the correct oil weight (usually 0W-20 or 5W-20 for modern Hondas).

P1259 — VTEC System Malfunction (Honda)

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Common symptoms of P1259

Common causes of P1259

Repair cost & difficulty

Vehicles commonly affected

Related trouble codes