C1562 2017 Chevrolet Silverado Code - Device Voltage Reference Output 2 Circuit Malfunction

The code C1562 indicates a "Device Voltage Reference Output 2 Circuit Malfunction," meaning there is an issue in the second voltage reference circuit, which is used to supply a stable voltage to certain vehicle sensors or modules.

Symptoms may include a check engine light or service warning, erratic sensor readings, reduced vehicle performance, or malfunctioning electronic systems related to the affected circuit.

Common causes include a short or open circuit in the voltage reference wiring, a faulty module or sensor using the voltage reference, corrosion at connectors, or a problem with the powertrain control module (PCM).

Yes, a loose or corroded connection in the voltage reference circuit can disrupt the electrical flow and trigger the C1562 code.

Diagnose the code by inspecting the wiring and connectors for the voltage reference circuit, testing the sensors or modules using the circuit, and using a multimeter to check for proper voltage and continuity.

While the truck may still be drivable, it’s not recommended, as the malfunction can affect critical systems, causing erratic behavior or potential safety issues.

Repairs may involve fixing or replacing damaged wiring, cleaning or reconnecting corroded connectors, replacing a faulty sensor or module, or reprogramming the PCM if needed.

Repair costs can vary widely depending on the root cause but generally range from $100 for wiring repairs to $500 or more if a module or sensor needs replacement.

Yes, a weak or failing battery can cause voltage inconsistencies, leading to a C1562 code. Ensure the battery is in good condition and properly charged.

Reprogramming the PCM is not always necessary, but if the issue is related to software glitches or firmware updates, it may be required after other repairs are completed.