Engine-Codes -
Generic -
P1056
P1056 - Valvetronic Supply Voltage Control Motor Low Input
Table of contents
P1056 Possible Causes
- Faulty Valvetronic Control Motor
- Valvetronic Control Motor harness is open or shorted
- Valvetronic Control Motor circuit poor electrical connection
How is the P1056 code repair?
Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.What is the cost to diagnose the P1056 code
Labor: 1.0
The cost to diagnose the P1056 code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1056 Meaning
The Valvetronic (VVT) System is a Variable Valve Lift (VVL) system that, in combination with variable valve timing, allows infinite adjustment of the intake valve timing and duration. The system helps improve fuel economy and emissions and negates the need for a throttle body in regular use. The electronic control of the Valvetronic is dependent on, Voltage Limits, Adaptations, current and power stage temperature. The monitoring function performs an electrical diagnosis Of the DC motor lines. The goal of this function is to detect a short circuit at the VVL output stage. The function uses temperatures from the sensor outputs of the power stage. If the temperature of one power stage is greater than a threshold the function checks the output stage. If a short circuit is detected an error is set.More Information
Need more information on how to fix the P1056 code?Get Access to Factory Service Manuals
Information for specific makes
- P1056 AUDI Bank 1 Camshaft Adjustment Short To Ground
- P1056 BMW Valvetronic Supply Voltage Control Motor Low Input
- P1056 DODGE Idle RPM Hi
- P1056 MINI Valvetronic Supply Voltage Control Motor Low Input
- P1056 VOLKSWAGEN Bank 1 Camshaft Adjustment Short To Ground