AutoCodes – Chevrolet – P0989 2016 Chevrolet Silverado

P0989 2016 Chevrolet Silverado Code - Transmission Fluid Pressure Switch 5 Circuit Low Voltage

Quick Answer

The Transmission Fluid Pressure (TFP) switch 5 is part of the Transmission Control Solenoid Valve Assembly, which has no serviceable parts. Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Transmission Control Solenoid Valve Assembly. 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
P0989 2016 Chevrolet Silverado indicates Transmission Fluid Pressure Switch 5 Circuit Low Voltage.
Common causes
Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Transmission Control Solenoid Valve Assembly.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 707
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 25, 2024
πŸ’¬ Need more help? Ask Coddy for instant answers β€” it's free!

Code P0989 2016 Chevrolet Silverado Description

The Transmission Fluid Pressure (TFP) switch 5 is part of the Transmission Control Solenoid Valve Assembly, which has no serviceable parts. The Transmission Control Module (TCM) supplies a signal circuit to the TFP switch 5. The TFP switch 5 has an internal case ground. TFP switch 5 is normally closed or LOW. When oil pressure is present at the TFP switch 5, the switch is open or HIGH. The normally high pressure control (PC) solenoid 3 controls pressure to the R1/4-5-6 clutch regular valve. The TCM monitors the TFP switch 5 signal circuit to determine the position of the R1/4-5-6 clutch regulator valve. When the low and reverse clutch and 4-5-6 clutch are commanded OFF, pressure is present on the TFP switch 5. When the low and reverse clutch or the 4-5-6 clutch is commanded ON, the R1/4-5-6 clutch regulator valve moves and pressure to the TFP switch 5 is exhausted through the R1/4-5-6 clutch regulator valve. The Diagnostic Trouble Code (DTC) will be set when the TCM detects that the TFP switch 5 signal voltage remains LOW after the 4-5-6 clutch transitions from a HIGH pressure state to a LOW pressure state. The TCM counts each incident. The DTC sets when 18 counts are accumulated.
OBDII Code P0989 2016 Chevrolet Silverado - Transmission Fluid Pressure Switch 5 Circuit Low Voltage - AutoCodes.com
P0989 2016 Chevrolet Silverado Code - Transmission Fluid Pressure Switch 5 Circuit Low Voltage

What are the Possible Causes of the DTC P0989 2016 Chevrolet Silverado?

  • Low transmission fluid level
  • Dirty transmission fluid
  • Faulty Transmission Control Solenoid Valve Assembly
  • Transmission Control Solenoid Valve Assembly harness is open or shorted
  • Transmission Control Solenoid Valve Assembly circuit poor electrical connection

How to Fix the DTC P0989 2016 Chevrolet Silverado?

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 P0989 2016 Chevrolet Silverado 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.

Need more information about the P0989 2016 Chevrolet Silverado code?

Need more information on how to fix the P0989 2016 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0989 2016 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area

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.

Frequently Asked Questions about P0989 2016 Chevrolet Silverado Code

1. What does the OBDII code P0989 mean on a 2016 Chevrolet Silverado?

P0989 indicates a "Transmission Fluid Pressure Switch 5 Circuit Low Voltage," meaning the powertrain control module (PCM) detected a low voltage signal from the transmission fluid pressure switch 5 circuit.

2. What are the common symptoms of a P0989 code?

Symptoms may include difficulty shifting gears, transmission slipping, harsh shifting, the transmission being stuck in one gear, or the check engine light being illuminated.

3. What causes the P0989 code to appear?

Common causes include a faulty transmission fluid pressure switch, damaged or corroded wiring, a poor electrical connection, or a malfunctioning PCM.

4. Can driving with a P0989 code damage my transmission?

Yes, continued driving with a P0989 code can lead to transmission damage, as improper fluid pressure regulation may affect shifting and overall performance.

5. How is the P0989 code diagnosed?

A technician will typically use a scan tool to verify the code, inspect the wiring and connectors, test the transmission fluid pressure switch, and check the transmission fluid level and condition.

6. How can I fix the P0989 code on my 2016 Chevrolet Silverado?

Repairs may involve replacing the faulty transmission fluid pressure switch, repairing or replacing damaged wiring, cleaning corroded connectors, or reprogramming or replacing the PCM if necessary.

7. Is low transmission fluid a possible cause of the P0989 code?

Yes, low or contaminated transmission fluid can cause improper pressure readings, potentially triggering the P0989 code.

8. What tools are needed to troubleshoot the P0989 code?

Diagnostic tools like an OBDII scanner, a multimeter for checking voltage and continuity, and basic hand tools for inspecting and replacing components are typically required.

9. How much does it cost to fix the P0989 code?

Repair costs can vary, ranging from $100 to $400 for parts and labor, depending on whether the issue is with the sensor, wiring, or PCM.

10. Can a P0989 code clear itself?

The code may clear temporarily if the issue is intermittent, but it will likely reappear until the root cause is addressed.

Discuss the causes and fixes for P0989 2016 Chevrolet Silverado OBDII Code

Code P0989 2016 Chevrolet Silverado comments

No comments found for this page.

AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play