Engine-CodesGeneric – P0942

P0942 Code - Hydraulic Pressure Unit

Quick Answer

The diagnostic trouble code P0942 refers to an issue with the hydraulic pressure unit in the vehicle's transmission system. Common causes include Faulty pressure control solenoid or valve, Low transmission fluid levels, Contaminated or degraded transmission fluid. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0942 indicates Hydraulic Pressure Unit.
Common causes
Common causes include Faulty pressure control solenoid or valve, Low transmission fluid levels, Contaminated or degraded transmission fluid.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Table of contents Created and updated by William Orellana on Aug 25, 2024
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Code P0942 Description

The diagnostic trouble code P0942 refers to an issue with the hydraulic pressure unit in the vehicle's transmission system. This code typically indicates that there is a problem with the pressure control solenoid or valve in the transmission, affecting the hydraulic pressure that is essential for proper gear shifting and overall transmission operation. If left unaddressed, this issue can lead to issues with gear shifting, transmission slipping, rough shifting, and even transmission failure over time.

OBDII Code P0942 - Hydraulic Pressure Unit
P0942 Code - Hydraulic Pressure Unit

Common Causes of P0942

  1. Faulty pressure control solenoid or valve
  2. Low transmission fluid levels
  3. Contaminated or degraded transmission fluid
  4. Wiring or electrical issues in the transmission system
  5. Mechanical problems within the hydraulic pressure unit

Symptoms of P0942

  1. Rough or delayed gear shifts
  2. Transmission slipping
  3. Transmission overheating
  4. Illumination of the check engine light
  5. Reduced fuel efficiency

How to Fix P0942

  1. Perform a diagnostic scan to confirm the P0942 code and identify the specific issue.
  2. Inspect the transmission fluid level and condition, topping up or replacing as necessary.
  3. Check and replace any faulty pressure control solenoid or valve.
  4. Inspect the wiring and electrical connections in the transmission system for any damage or corrosion.
  5. Test drive the vehicle to ensure proper gear shifting and transmission operation after repairs.

Cost to Fix P0942

The cost of repairing a hydraulic pressure unit issue can vary depending on the specific cause of the problem and the make and model of the vehicle. On average, the repair costs for this issue can range from $200 to $600, including parts and labor. It's important to note that diagnostic time and labor rates at auto repair shops can vary, so it's recommended to obtain quotes from multiple sources for an accurate estimate.

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Code P0942 Information for Specific Makes

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0942 Code

No Frequently Asked Questions about P0942 Code found.

Discuss the causes and fixes for P0942 OBDII Code

  • How hard is it to change the pressure unit and can I drive it with it reading on the computer

  • What model and year is your vehicle? do you have any other symptoms?

  • It's a 2007 freestyle it's not my car I'm looking at buying it if it's not hard fix

  • Fixing the P0942 code could be a very expensive repair. From a national database of repairs, the only solutions found for the P0942 code was the Transmission Assembly.