OBD Guide
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P1788

3-2 Timing/Coast Clutch Solenoid Circuit Open Conditions

P1788 is an OBD-II diagnostic trouble code meaning: 3-2 Timing/Coast Clutch Solenoid Circuit Open Conditions. Common causes: open circuit in solenoid circuit, clutch solenoid malfunction. Estimated repair cost: $17–56.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Gear shifting problems
  • The gearbox goes into emergency mode
  • Check Engine light comes on
  • Unstable engine operation when shifting gears
  • Loss of power during acceleration

Causes

  • Open circuit in solenoid circuit
  • Clutch solenoid malfunction
  • Wiring harness damage
  • Oxidation or damage to connectors
  • Malfunction of the transmission control unit (rare)

How to Fix

  1. Check the continuity of the solenoid circuit
  2. Check solenoid resistance
  3. Inspect and clean connectors
  4. Replace solenoid if necessary
  5. Check the operation of the gearbox control unit

Related codes

P1789P1790

Error P1788 by Vehicle Brand

AcuraFordHondaInfinitiLincolnMazdaMercuryNissanVolkswagen

FAQ

What does the P1788 code mean?

P1788 is an OBD-II diagnostic trouble code that indicates: 3-2 Timing/Coast Clutch Solenoid Circuit Open Conditions

What causes a P1788 error code?

The most common causes of P1788 include: Open circuit in solenoid circuit; Clutch solenoid malfunction; Wiring harness damage; Oxidation or damage to connectors.

How do I fix a P1788 diagnostic trouble code?

To fix P1788: Check the continuity of the solenoid circuit. Check solenoid resistance. Inspect and clean connectors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1788?

Limited driving only, diagnose soon

How much does it cost to fix P1788?

The estimated repair cost for P1788 is $17–56. Actual cost depends on your vehicle, location, and labor rates.

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