AutoCodes – Generic – P16C0

P16C0 Code - Powertrain Control Module A/T Control System Incomplete Update

Quick Answer

The control program in the Powertrain Control Module (PCM) has a rewriting function that can be done in the field. Common causes include Faulty Powertrain Control Module (PCM), Powertrain Control Module (PCM) harness is open or shorted, Powertrain Control Module (PCM) 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: P16C0 indicates Powertrain Control Module A/T Control System Incomplete Update.
Common causes: Common causes include Faulty Powertrain Control Module (PCM), Powertrain Control Module (PCM) harness is open or shorted, Powertrain Control Module (PCM) 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 5,929

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 Jan 10, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P16C0 Description

The control program in the Powertrain Control Module (PCM) has a rewriting function that can be done in the field. The programs in the PCM CPU are the powertrain control program (rewritable program) and the update program (non-rewritable program). When the program rewriting process is not finished normally, such as turning off the PCM power during the rewriting process, and then turning the ignition switch to ON (II) again, the A/T CPU starts according to the rewriting function program, and this Diagnostic Trouble Code (DTC) is sent to the FI CPU via serial communication and stored in the PCM.

OBDII Code P16C0 - Powertrain Control Module A/T Control System Incomplete Update - AutoCodes.com — P16C0 Code - Powertrain Control Module A/T Control System Incomplete Update

What does this mean?

What are the Possible Causes of the DTC P16C0?

Faulty Powertrain Control Module (PCM)
Powertrain Control Module (PCM) harness is open or shorted
Powertrain Control Module (PCM) circuit poor electrical connection

How to Fix the DTC P16C0?

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 P16C0 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 P16C0 code?

Need more information on how to fix the P16C0 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P16C0 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P16C0 Acura — Powertrain Control Module A/T Control System Incomplete Update
P16C0 BMW — Engine Control Module Self-Test Electronic Stability Program Monitoring
P16C0 Honda — Powertrain Control Module A/T Control System Incomplete Update
P16C0 MINI — Engine Control Module Self-Test Electronic Stability Program Monitoring

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.