Search engine trouble codes.
Example: P0120
U0438 Case Y engine code seems a kind of network problem, we try to show one by one the meaning and the solution.
Brief explanation of the U0438 Case Y code and definition of U0438 Case Y is the bottom side.
| u |
Network Code Problem is climate control system, lighting, airbags, etc. |
| 0 | SAE - Generic |
| 4 | Transmission |
| 3 | Cruise Control Servo Indicates Low |
| 8 | PCM Stack Overrun |
SAE - Generic codes, which have a '0' as their second digit to indicate they are common to all makes and models of vehicles. These are the codes that are required for basic emissions fault diagnosis.
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How To Fix U0438 Case Y ?
The poor running symptoms are consistent with a MAP sensor malfunction. In addition, in some cases, a bad MAP sensor will not throw a code. Again, the ELD code likely represents a separate wiring issue. |
The original multi-displacement system turned off opposite pairs of cylinders, allowing the engine to have three different configurations and displacements. U0438 code had an elaborate diagnostics procedure, including showing engine trouble codes on the air conditionning display. However, the system was troublesome, misunderstood by customers, and a rash of unpredictable failures led to the technology being quickly retired. When you see U0438 Case Y engine fault code on your engine code reader this description will help you.
| U Codes | List of all Network codes. |
Final Step: In the definitions listed below, there is a test drive recommended after you've completed any repairs to see if the condition is fixed. Before you take a test drive after a repair, always erase the U Code(s) first. This will turn the check engine light off and then you will know if the check engine light returns, you've got further diagnostics to complete.
BE CAREFUL !
This engine code information is presented for information purposes only. This is not intended as repair advice and we are not responsible for any actions you take on any vehicle.
