AutoCodes – Cadillac – P1814 Cadillac

P1814 Cadillac Code - Torque Converter Overstressed

Quick Answer

When the transmission not in Park/Neutral (P/N), Vehicle Speed Sensor (VSS) input at 5 mph or less, Torque Converter Clutch (TCC) slip speed over 1500 rpm, the Powertrain Control Module (PCM) detects that the throttle angle was 79% or greater for 12 seconds in the test. Common causes include Faulty Torque Converter Clutch Solenoid, Torque Converter Clutch Solenoid harness is open or shorted, Torque Converter Clutch Solenoid 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
P1814 Cadillac indicates Torque Converter Overstressed.
Common causes
Common causes include Faulty Torque Converter Clutch Solenoid, Torque Converter Clutch Solenoid harness is open or shorted, Torque Converter Clutch Solenoid 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 3,450
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 20, 2019
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Code P1814 Cadillac Description

When the transmission not in Park/Neutral (P/N), Vehicle Speed Sensor (VSS) input at 5 mph or less, Torque Converter Clutch (TCC) slip speed over 1500 rpm, the Powertrain Control Module (PCM) detects that the throttle angle was 79% or greater for 12 seconds in the test.
OBDII Code P1814 Cadillac - Torque Converter Overstressed - AutoCodes.com
P1814 Cadillac Code - Torque Converter Overstressed

What are the Possible Causes of the DTC P1814 Cadillac?

  • Faulty Torque Converter Clutch Solenoid
  • Torque Converter Clutch Solenoid harness is open or shorted
  • Torque Converter Clutch Solenoid circuit poor electrical connection

How to Fix the DTC P1814 Cadillac?

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 P1814 Cadillac 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.

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