AutoCodes – Honda – P0979 Honda

P0979 Honda Code - Shift Solenoid Valve 'C' Short

Quick Answer

When shift solenoid valves A, B, C, D, and E are turned ON, the hydraulic pressure circuit opens. Common causes include Faulty Shift Solenoid 'C', Shift Solenoid 'C' harness is open or shorted, Shift Solenoid 'C' circuit poor electrical connection. 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: P0979 Honda indicates Shift Solenoid Valve 'C' Short.
Common causes: Common causes include Faulty Shift Solenoid 'C', Shift Solenoid 'C' harness is open or shorted, Shift Solenoid 'C' circuit poor electrical connection.
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.

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Code Popularity 6,876

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 11, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P0979 Honda Description

When shift solenoid valves A, B, C, D, and E are turned ON, the hydraulic pressure circuit opens. The hydraulic pressure circuit supplies/discharges hydraulic pressure to/from each clutch according to the combination of the ON/OFF status of the shift solenoid valves. The Powertrain Control Module (PCM) commands the driver circuit to turn on the shift solenoid valve. The circuit diagnoses malfunctions such as a circuit short or open, and sends back a return signal during the PCM's command. When the return signal does not match the PCM command to turn OFF the shift solenoid valve, the PCM detects a malfunction and stores a Diagnostic Trouble Code (DTC).

OBDII Code P0979 Honda - Shift Solenoid Valve 'C' Short - AutoCodes.com — P0979 Honda Code - Shift Solenoid Valve 'C' Short

What does this mean?

What are the Possible Causes of the DTC P0979 Honda?

Faulty Shift Solenoid 'C'
Shift Solenoid 'C' harness is open or shorted
Shift Solenoid 'C' circuit poor electrical connection

How to Fix the DTC P0979 Honda?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0979 Honda code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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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.