Actuator Supply Voltage Circuit High
The P2671 code indicates that the powertrain control module (PCM) has detected a voltage level in the actuator supply voltage circuit that is higher than the specified range. This circuit provides power to various actuators such as variable valve timing solenoids, transmission shift solenoids, or other electronic actuators. A high voltage condition can be caused by a short to voltage in the wiring, a faulty actuator, or a malfunctioning PCM. This can lead to erratic actuator operation or failure, potentially affecting engine performance, transmission shifting, or other vehicle systems.
01. Most Common Causes
- Short to voltage in the actuator supply circuit wiring
- Faulty actuator (e.g., solenoid) drawing excessive current
- Corroded or damaged connector causing high resistance
- Malfunctioning PCM or voltage regulator
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Erratic transmission shifting or harsh engagement
- Reduced engine performance or stalling
- Actuator-related systems not functioning properly
03. Step-by-Step Diagnosis
Step 1: Use a scan tool to retrieve all stored codes and freeze frame data.
Step 2: Visually inspect the actuator supply circuit wiring and connectors for damage, corrosion, or shorts.
Step 3: Measure voltage at the actuator supply circuit with a multimeter; compare to manufacturer specifications.
Step 4: Test the actuator(s) for proper resistance and operation; replace if out of spec.
Step 5: If wiring and actuators are okay, check PCM for faults; reprogram or replace if necessary.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive with this code as it can cause erratic actuator operation, leading to transmission damage or engine performance issues. Have the vehicle diagnosed and repaired promptly.
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.