Code Definition

P0662 — Variable intake air solenoid circuit voltage high - Bank 1

System: Powertrain  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About P0662

P0662 is a generic (obd-ii standard) powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P0662 is stored, the module has detected a signal or supply voltage higher than the expected operating range; and a bank-specific fault, meaning it applies only to one cylinder bank of a multi-bank engine.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

Because P0662 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The fault code P0662 is set when the Engine Control Module (ECM) detects a higher than normal voltage in the circuit controlling the Variable Intake Air System Solenoid for Bank 1. This solenoid is a crucial part of the system that regulates the airflow in the intake manifold to enhance engine performance at various RPMs. A high voltage condition in the solenoid's control circuit suggests a potential short to power or an internal malfunction within the ECM. Such a condition can adversely affect the operation of the variable intake system, potentially leading to performance issues, including de...

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