P001C: Camshaft Profile Control Circuit High Bank 1
The P001C code indicates that the powertrain control module (PCM) has detected a high voltage condition in the camshaft profile control circuit for Bank 1. This circuit controls the variable valve timing (VVT) solenoid, which adjusts camshaft timing for optimal performance. A high voltage reading suggests a short to power, faulty solenoid, or wiring issue. This can lead to poor engine performance, reduced fuel economy, and potential drivability problems.
01. Most Common Causes
- Faulty camshaft profile control solenoid (VVT solenoid)
- Short to power in the wiring or connector
- Corroded or damaged electrical connector
- Failed PCM (rare)
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Rough idle or engine misfire
- Reduced engine power and acceleration
- Poor fuel economy
03. Step-by-Step Diagnosis
Step 1: Use an OBD2 scanner to confirm the code and check for additional codes.
Step 2: Visually inspect the wiring and connector for damage, corrosion, or shorts.
Step 3: Test the camshaft profile control solenoid resistance with a multimeter (specs vary by vehicle).
Step 4: Check for voltage at the solenoid connector with the ignition on; if voltage is higher than expected, trace the short.
Step 5: If wiring and solenoid are okay, test the PCM output or consider PCM replacement.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as it can cause poor engine performance and potential damage to the catalytic converter or engine.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for diagnosis and repair, but can be higher if the PCM needs replacement.