What Does P1570 Mean?
The Variable Tumble Control System (VTCS) or Variable Induction Control System circuit is reading abnormally high voltage. The control solenoid or actuator circuit has a short to voltage or open circuit condition.
Common Causes
35%
Short to voltage in VTCS solenoid wiring
30%
Failed VTCS solenoid valve with internal short
20%
Damaged or corroded connector causing high resistance
15%
PCM internal control circuit failure
Diagnostic Steps
1
Step 1: Locate VTCS solenoid valve on intake manifold and inspect connector
2
Step 2: Disconnect solenoid and measure voltage at harness connector (should be near zero)
3
Step 3: Test VTCS solenoid resistance and compare to specifications
4
Step 4: Check for chafed wiring causing short to power along harness routing
5
Step 5: Monitor VTCS system operation and voltage with scan tool during varied RPM
Estimated Repair Cost
$100 - $450
Parts + labor, varies by vehicle and location
The Variable Tumble Control System (VTCS) or Variable Induction Control System circuit is reading abnormally high voltage. The control solenoid or actuator circuit has a short to voltage or open circuit condition.
The most common cause of P1570 (VTCS Circuit High Input) is: Short to voltage in VTCS solenoid wiring
Typical repair costs for P1570 range from $100 to $450, depending on the vehicle, location, and whether you do it yourself or go to a shop.
No significant safety concern. May experience reduced engine performance at certain RPM ranges but vehicle remains safe to drive.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P1570 to identify the root cause.
OBDHut Mobile App
Scan codes directly from your car with the OBDHut app.
Coming Soon
Quick Info
Category
Powertrain
System
Intake Air Management
Difficulty
Type
Manufacturer
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
