P0933 Fault Code

Hydraulic Pressure Sensor Range/Performance

• What does that mean?
• Symptoms
• Causes
• Solutions

The P0933 fault code indicates an issue with the hydraulic pressure sensor's range or performance, typically in vehicles equipped with an automatic transmission. This code is triggered when the engine control module (ECM) detects that the pressure sensor is reporting values outside the expected range, hinting at potential problems in the hydraulic system. The hydraulic pressure sensor plays a crucial role in aiding the transmission control module (TCM) in managing transmission shift points and ensuring optimal vehicle performance.

What are the symptoms of the P0933 code?

Symptoms that can accompany the P0933 code are:

• Unusual shifting behavior or delays in shifting.
• Transmission slipping or overheating.
• Warning lights illuminated on the dashboard, such as the check engine light.
• Poor acceleration or overall performance issues.
• Transmission diagnostics indicating additional error codes.

What causes the P0933 code?

Common causes for the P0933 code include:

• A faulty hydraulic pressure sensor.
• Wiring issues such as damaged connectors or short circuits.
• Low transmission fluid levels or fluid contamination.
• Malfunctioning transmission control module (TCM).
• Internal transmission problems, such as a faulty pump or valve body.

How to fix P0933?

To address the P0933 code, the following steps should be taken:

• Inspect the hydraulic pressure sensor and its wiring for damage or disconnection and repair as necessary.
• Check the transmission fluid level and condition, replacing or replenishing fluids if needed.
• Test the hydraulic pressure sensor to confirm its functionality and replace it if it's defective.
• Verify that the TCM is functioning correctly and reprogram or replace it if required.
• If internal transmission issues are suspected, a thorough inspection of the transmission may be necessary to determine further repairs.