What Does P1524 Mean?
The PCM has detected an abnormally high voltage signal from the intake camshaft position actuator (VVT solenoid) on Bank 1. This indicates a potential short to power or internal solenoid failure preventing proper variable valve timing control.
Common Causes
35%
Shorted VVT solenoid or internal short to voltage
30%
Damaged wiring harness or connector pins shorted to power
20%
PCM internal driver circuit failure
10%
Corroded or damaged connector causing voltage backfeed
5%
Aftermarket electrical accessory causing voltage interference
Diagnostic Steps
1
Step 1: Inspect VVT solenoid connector for corrosion, damage, or oil contamination; disconnect and visually examine pins
2
Step 2: Measure resistance of VVT solenoid (typically 6-12 ohms); replace if out of specification
3
Step 3: Check wiring from solenoid to PCM for shorts to power using multimeter; wiggle test while monitoring voltage
4
Step 4: Monitor live data for VVT actuator command vs actual position; compare to specifications
5
Step 5: If wiring and solenoid test good, suspect PCM driver circuit failure requiring module replacement
Estimated Repair Cost
$150 - $800
Parts + labor, varies by vehicle and location
The PCM has detected an abnormally high voltage signal from the intake camshaft position actuator (VVT solenoid) on Bank 1. This indicates a potential short to power or internal solenoid failure preventing proper variable valve timing control.
The most common cause of P1524 ("A" Camshaft Position Actuator Signal High Bank 1) is: Shorted VVT solenoid or internal short to voltage
Typical repair costs for P1524 range from $150 to $800, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle is safe to drive but may experience reduced performance, rough idle, and increased fuel consumption. Extended operation may cause catalytic converter damage.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P1524 to identify the root cause.
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Quick Info
Category
Powertrain
System
Variable Valve Timing System
Difficulty
Type
Manufacturer
Recommended Tools
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