Engine-Codes - Isuzu - P0788 ISUZU

P0788 ISUZU Code - 3-2 Shift Solenoid Control Circuit High Voltage

- Code Popularity: 2,954 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents

|What are the Possible Causes of the P0788 ISUZU Code?

  • Low transmission fluid level
  • Dirty transmission fluid
  • Faulty shifting solenoid valve
  • Shifting solenoid valve harness is open or shorted
  • Shifting solenoid valve circuit poor electrical connection

|How to Fix the P0788 ISUZU Code?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

|What is the cost to diagnose the P0788 ISUZU code?

Labor: 1.0

The cost to diagnose the P0788 ISUZU code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|When is the P0788 ISUZU code detected?

Code P0788 is detected when the Engine Control Module (ECM) detects open in solenoid valve ST circuit 4 times when solenoid valve ST is operated

|What are P0788 ISUZU code possible symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|What Does the P0788 ISUZU Code Mean?

Shift solenoid valve ST is switched ON OFF by a signal from Engine Control Module (ECM) so that let in or out timing of 2nd brake is adjusted by operating orifice control valve. Therefore, shift solenoid valve ST operates when letting in or out reverse clutch.

3-2 Shift Solenoid Control Circuit High Voltage

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