What Does P001C Mean?
The PCM has detected that the Bank 1 intake (A) camshaft profile control solenoid circuit voltage is above the expected threshold. This high-side circuit fault suggests an open ground circuit, short to battery voltage in the control wire, or a solenoid that is not drawing the expected current when commanded on.
Common Causes
30%
Open ground circuit at the camshaft profile solenoid or its ground path
30%
Short to battery voltage in the solenoid control wire
20%
Failed camshaft profile solenoid with high internal resistance
15%
Corroded connector pins creating high resistance in the circuit
5%
PCM internal driver circuit stuck high or failed
Diagnostic Steps
1
Measure the Bank 1 intake cam profile solenoid coil resistance — values above manufacturer spec (typically over 35 ohms) indicate high resistance or partial open
2
With the solenoid disconnected and ignition on, measure voltage on the PCM control wire — it should be near 0V when off or pulse low when commanded; constant battery voltage indicates short to B+
3
Verify the solenoid ground circuit has less than 0.5 ohms resistance to chassis ground; a poor ground will cause elevated circuit voltage
4
Inspect the harness for damage where wires run near positive battery cables or ignition system components that could cause a short to B+
5
Clear the code, command the solenoid via bidirectional control, and monitor the circuit voltage in real time to confirm the high condition
Estimated Repair Cost
$80 - $500
Parts + labor, varies by vehicle and location
The PCM has detected that the Bank 1 intake (A) camshaft profile control solenoid circuit voltage is above the expected threshold. This high-side circuit fault suggests an open ground circuit, short to battery voltage in the control wire, or a solenoid that is not drawing the expected current when c...
The most common cause of P001C ("A" Camshaft Profile Control Circuit High Bank 1) is: Open ground circuit at the camshaft profile solenoid or its ground path
Typical repair costs for P001C range from $80 to $500, depending on the vehicle, location, and whether you do it yourself or go to a shop.
The cam profile system will be disabled, locking the engine into a single cam profile. Performance is reduced, especially at higher RPM, but the vehicle remains safe to drive at normal speeds.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P001C to identify the root cause.
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Quick Info
Category
Powertrain
System
Variable Valve Timing / Cam Profile Switching System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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