P0993 - Transmission Fluid Pressure Sensor/Switch F Circuit Range/Performance

The control module detected a fault related to transmission fluid pressure sensor/switch f circuit range/performance. Diagnose the circuit, command, feedback, and mechanical conditions before replacing parts.

Code first. Confirm symptoms and checks before pricing parts.

Code Overview

The control module detected a fault related to transmission fluid pressure sensor/switch f circuit range/performance. Diagnose the circuit, command, feedback, and mechanical conditions before replacing parts.

Common Causes

• transmission pressure sensor circuit wiring or connector concern
• transmission pressure sensor component fault
• Low system voltage, poor ground, or module communication issue
• Mechanical or hydraulic problem affecting the monitored operation

Diagnostic Steps

1. Confirm the code, freeze-frame data, and whether related codes set at the same time
2. Inspect fluid level/condition where applicable and check for visible leaks or damage
3. Inspect wiring, terminals, grounds, and connectors before replacing the component
4. Compare commanded vs. actual scan-tool data and verify power, ground, and control circuits
5. Verify mechanical operation before condemning an actuator, module, transmission, or assembly

Likely Repairs & Cost Guides

Confirm the repair path before pricing parts.

Related OBD Codes

Browse nearby codes when systems overlap.

Next Steps

Move from code to checks, then estimate.