What Does P1525 Mean?
The PCM has detected an open circuit in the control circuit for the intake camshaft position actuator on Bank 1. This means there is a break in the electrical path preventing the PCM from controlling the VVT solenoid.
Common Causes
40%
Broken or disconnected wiring between PCM and VVT solenoid
30%
Failed VVT solenoid with internal open circuit
20%
Damaged, corroded, or loose electrical connector
8%
PCM internal driver circuit failure
2%
Fuse or relay failure in VVT control circuit
Diagnostic Steps
1
Step 1: Inspect VVT solenoid connector and pins for damage, corrosion, or looseness; ensure fully seated
2
Step 2: Measure resistance of VVT solenoid; infinite resistance indicates open circuit requiring replacement
3
Step 3: Check continuity from PCM connector to VVT solenoid connector on control wire; repair any breaks
4
Step 4: Verify ground circuit continuity and quality from solenoid to PCM
5
Step 5: Check relevant fuses and relays in VVT control circuit; test PCM power and ground supplies
Estimated Repair Cost
$120 - $750
Parts + labor, varies by vehicle and location
The PCM has detected an open circuit in the control circuit for the intake camshaft position actuator on Bank 1. This means there is a break in the electrical path preventing the PCM from controlling the VVT solenoid.
The most common cause of P1525 ("A" Camshaft Position Actuator Control Open Circuit Bank 1) is: Broken or disconnected wiring between PCM and VVT solenoid
Typical repair costs for P1525 range from $120 to $750, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to drive but engine may operate in fixed cam timing mode, resulting in poor performance and fuel economy. Prolonged operation may cause engine damage or catalyst failure.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P1525 to identify the root cause.
OBDHut Mobile App
Scan codes directly from your car with the OBDHut app.
Coming Soon
Quick Info
Category
Powertrain
System
Variable Valve Timing System
Difficulty
Type
Manufacturer
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
