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p1259
Moderate
Acura · Sedans
VTEC System Malfunction
Quick Answer
Error code P1259 on your Acura Sedans means: VTEC System Malfunction. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
DE3/DE4DC5/DN2DN2NC1KC1UA6CU2
Likely Causes
  1. Low engine oil level or dirty oil
  2. Faulty VTEC solenoid valve
  3. Camshaft timing issue
  4. Oil pressure insufficient for VTEC engagement
  5. Wiring harness damage to VTEC solenoid
How to Fix It
1
Check engine oil level and condition
2
Change oil and oil filter if dirty
3
Test VTEC solenoid resistance
4
Verify oil pressure meets specifications
5
Inspect wiring to VTEC solenoid valve
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Engine oil and filter
VTEC solenoid valve
Related Error Codes
P0171P0300P0301P0420P0325
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