What Does P1529 Mean?
The PCM has detected an abnormally low voltage signal on the exhaust camshaft position actuator control circuit for Bank 1. This indicates a short to ground or excessive current draw affecting the Bank 1 exhaust VVT system.
Common Causes
35%
Wiring harness chafed or shorted to ground/engine block
30%
Exhaust VVT solenoid internal short to ground
20%
Damaged or corroded connector causing short circuit
10%
Oil contamination in connector creating low resistance path
5%
PCM internal driver circuit fault
Diagnostic Steps
1
Step 1: Locate Bank 1 exhaust VVT solenoid; disconnect connector and inspect for oil, corrosion, or damage
2
Step 2: Measure resistance from control circuit pin to ground with solenoid disconnected; should show infinite resistance
3
Step 3: Measure exhaust VVT solenoid resistance; compare to specifications (typically 6-12 ohms)
4
Step 4: Trace wiring harness looking for contact with hot exhaust components or sharp metal edges
5
Step 5: Perform isolation test by disconnecting PCM connector and checking control wire resistance to ground
Estimated Repair Cost
$150 - $750
Parts + labor, varies by vehicle and location
The PCM has detected an abnormally low voltage signal on the exhaust camshaft position actuator control circuit for Bank 1. This indicates a short to ground or excessive current draw affecting the Bank 1 exhaust VVT system.
The most common cause of P1529 ("B" Camshaft Position Actuator Control Circuit Signal Low Bank 1) is: Wiring harness chafed or shorted to ground/engine block
Typical repair costs for P1529 range from $150 to $750, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to drive but exhaust cam timing will be fixed, causing reduced power, rough idle, and poor fuel economy. Address within a reasonable timeframe to prevent emissions system damage.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P1529 to identify the root cause.
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Quick Info
Category
Powertrain
System
Variable Valve Timing System
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