P078BShift Timing Solenoid B Range/Performance
Shift timing solenoid B is electrically intact, but actual shift timing does not match the model — same failure modes as solenoid A (aged, dirty ATF), applied to the second timing channel.
Can I keep driving? With caution
You can drive to the shop, but do not postpone the repair. The problem may worsen and damage other components.
Sistema Afectado
Transmisión · Caja y solenoides
La avería está en la transmisión: solenoides, sensores de velocidad o presión de aceite.
Espacio para vendedores de repuestos
Aún no hay un anunciante en este espacio.
Symptoms You Will Notice
What you may observe when this code appears
- Check engine or transmission warning light on Harsh
- delayed
- or missing shifts Possible limp mode (locked in one gear) Slipping or shuddering during gear changes
Possible Causes
The components or conditions that trigger this code
- 1Aged solenoid with weakened force Sensor element aged beyond calibration window Sensor mounting loose - signal damping
How to Fix It — Step by Step
Recommended diagnostic and repair procedure
- 1Difficulty: hard. Estimated time: 2-8 hours. Estimated cost: €400-€
- 2Professional repair recommended
Note: This information is for general reference. For precise diagnostics and safety repairs, always consult a certified mechanic.
Estimated Cost
Approximate range in USD (varies by region and shop)
Solenoids + transmission
* Diagnosis only: $50–$150
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