P0701 Transmission Control System Performance

• Code: P0700
• Description: Transmission Control System Malfunction
• Definition: This code indicates that there is a malfunction in the transmission control system. The Powertrain Control Module (PCM) has detected an issue with the transmission control module or its related components.
• Code: P0701
• Description: Transmission Control System Range/Performance
• Definition: This code signifies that the transmission control system is not operating within its expected range or performance parameters. It may be due to a sensor, solenoid, or other component failure affecting the transmission’s operation.
• Code: P0702
• Description: Transmission Control System Electrical
• Definition: This code means there is an electrical problem within the transmission control system. It could involve wiring issues, short circuits, or problems with connectors and sensors.
• Code: P0703
• Description: Torque Converter/Brake Switch B Circuit Malfunction
• Definition:This code indicates a malfunction in the circuit for the torque converter brake switch ‘B’. It suggests that there might be an issue with the brake switch itself or its associated wiring and connections.

P0701 – Transmission Control System Performance
Severity: Moderate

Common Causes

P0701 – Transmission Control System Performance

Common Causes:

• Faulty transmission control module (TCM)
• Wiring issues between TCM and transmission
• Low transmission fluid level or dirty transmission fluid
• Mechanical issues within the transmission itself

 

Common Misdiagnosis

OBD2 Code: P0701

Description: Transmission Control System Performance

Common Misdiagnosis: Replacing the transmission control module (TCM) without checking for wiring issues or fluid level and condition.

 

Common Diagnostic Steps

OBD2 Code: P0701

Description: Transmission Control System Performance

Common Diagnostic Steps:

• Check the transmission fluid level and condition. Refill or replace as necessary.
• Inspect the wiring and connectors for damage, corrosion, or loose connections.
• Use a scan tool to check for any other related trouble codes that might indicate specific issues with sensors or actuators.
• Test the operation of the transmission control module (TCM) using a diagnostic tool.
• Perform a visual inspection of the transmission components for signs of wear or damage.
• If applicable, update the TCM software to the latest version provided by the manufacturer.
• If no faults are found, consider performing a pressure test on the transmission system to identify internal issues.