What does Buick trouble code p2138 mean?
1 Answers
Buick trouble code p2138 indicates a throttle/accelerator pedal position sensor malfunction. Below is a detailed introduction to automotive fault codes: 1. Meaning: Represents the monitored fault system - P for powertrain; B for body system; C for chassis system; U for network or data communication transmission system fault codes. 2. First digit: Indicates whether it's a generic code (applicable to all vehicle manufacturers) or a manufacturer-specific code. For example: 0 refers to a generic code, 1 refers to a manufacturer-specific code. General Motors in the U.S. has specific numeric type codes to assist in diagnosing vehicle technical conditions. 3. Second digit: Identifies the type of affected fault system, with numbers ranging from 1-7: 1 for fuel and air metering system; 2 for fuel and air metering system (specifically for injection system circuit malfunction); 3 for ignition system or misfire monitoring system; 4 for auxiliary emission system; 5 for speed control and idle control system; 6 for computer output circuit system; 7 for transmission.