OBD Guide

P1525

Camshaft Position Actuator 'A' Control Open Circuit Bank 1

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–89 (est.)

Symptoms

  • Check Engine light comes on
  • Deterioration in acceleration dynamics
  • Increased fuel consumption
  • Unstable engine operation at idle
  • Reduced engine power

Causes

  • Open or short circuit in VVT valve control circuit
  • VVT solenoid valve malfunction
  • Poor contact in VVT valve connector
  • Problems with the engine control unit
  • Low engine oil level or pressure

How to Fix

  1. Check the integrity of the wiring harness to the VVT valve
  2. Measure VVT valve resistance (usually 6-12 ohms)
  3. Check the voltage at the valve connector with the ignition on
  4. Clean or replace VVT valve if necessary
  5. Check the level and condition of the engine oil

Related codes

Error P1525 by Vehicle Brand