#obd2 codes

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P0740 Code – Torque Converter Clutch Circuit Fault

The P0740 code is an OBD2 diagnostic trouble code that indicates a malfunction in the torque converter clutch (TCC) circuit. Automatic transmissions use a torque converter to transfer power from the engine to the transmission. Inside the torque converter is a lock-up clutch that engages at higher speeds to improve fuel efficiency and reduce engine load. When the transmission control module…

P0740 Code – Torque Converter Clutch Circuit Fault

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P0500 Code – Vehicle Speed Sensor Fault

The P0500 code is an OBD2 diagnostic trouble code that indicates a malfunction in the vehicle speed sensor (VSS) circuit. The vehicle speed sensor measures how fast the vehicle is moving and sends this information to the engine control unit (ECU) and transmission control module (TCM). This data is used for several systems including: speedometer operation automatic transmission…

P0500 Code – Vehicle Speed Sensor Fault

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P0700 Code – Transmission Control System Fault

The P0700 code is an OBD2 diagnostic trouble code that indicates a malfunction in the transmission control system. Unlike many other codes, P0700 does not point to a specific mechanical failure. Instead, it tells the engine control unit (ECU) that the transmission control module (TCM) has detected a fault and stored additional diagnostic codes. When this happens, the ECU turns on the Check Engine…

P0700 Code – Transmission Control System Fault

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P0507 Code – Idle RPM Too High

The P0507 code is an OBD2 diagnostic trouble code that indicates the engine idle speed is higher than expected. Modern vehicles control idle speed electronically using the engine control unit (ECU) together with components such as the throttle body, idle air control valve and intake sensors. When the ECU detects that the engine idle speed is above the programmed limit, it stores the P0507 code…

P0507 Code – Idle RPM Too High