What Does P1533 Mean?
The PCM has detected an abnormally low voltage signal in the 'B' camshaft position actuator control circuit on Bank 2. This indicates a short to ground or low resistance condition in the circuit.
Common Causes
40%
Wiring harness shorted to ground or chafed against metal
30%
Failed camshaft actuator solenoid with internal short
15%
Damaged connector pins causing short to ground
10%
Water or oil contamination in connector causing short
5%
Failed PCM with internal short in driver circuit
Diagnostic Steps
1
Step 1: Disconnect Bank 2 exhaust camshaft actuator connector and clear codes; if code returns immediately, short is in wiring harness
2
Step 2: With actuator disconnected, measure resistance between control circuit wire and ground; should be infinite resistance
3
Step 3: Inspect wiring harness routing for chafing points or damage, especially near sharp edges or hot components
4
Step 4: Measure resistance of disconnected actuator solenoid coil to ground; should be infinite resistance (no short)
5
Step 5: If wiring and actuator test good, suspect PCM internal short
Estimated Repair Cost
$120 - $650
Parts + labor, varies by vehicle and location
The PCM has detected an abnormally low voltage signal in the 'B' camshaft position actuator control circuit on Bank 2. This indicates a short to ground or low resistance condition in the circuit.
The most common cause of P1533 ("B" Camshaft Position Actuator Control Circuit Signal Low Bank 2) is: Wiring harness shorted to ground or chafed against metal
Typical repair costs for P1533 range from $120 to $650, 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 and fuel economy. Continued operation with electrical short may damage PCM.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P1533 to identify the root cause.
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Powertrain
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