AutoCodes – Cadillac – P1A68 Cadillac

P1A68 Cadillac Code - Starter/Generator Control Module Programming Read Only Memory

Quick Answer

What it means: P1A68 Cadillac indicates Starter/Generator Control Module Programming Read Only Memory.
Common causes: Common causes include Faulty, harness is open or shorted, 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 780

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 Feb 19, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1A68 Cadillac Description

The purpose of the Accessory Power Module (APM), integral to the Starter/Generator Control Module (SGCM), is to control the amount and direction of energy flowing between the 42 V DC and 14 V DC buses via the APM, bi-directional 42 V DC to 14 V DC converter. All APM functions will only be run when in the enable mode. APM current will be defined as the current flowing through the outputs. APM power is bi-directional, with negative current representing 14-42 direction, and positive current representing the 42-14 direction.
When the APM Power Conversion direction is set to a value of 42 V to 14 V, the energy will flow from the 42 V DC Bus to the 14 V DC Bus via the APM. When the Service Charge or jump starting is requested, the energy will flow from the 14 V DC Bus to the 42 V DC Bus via the APM. When the APM Power Conversion direction is set to a value of Off, the APM will be turned off, and not consume or transfer any power. When the APM Power Conversion direction is set to a value of Invalid, the energy will flow from the 42 V DC Bus to the 14 V DC Bus via the APM.

OBDII Code P1A68 Cadillac - Starter/Generator Control Module Programming Read Only Memory - AutoCodes.com — P1A68 Cadillac Code - Starter/Generator Control Module Programming Read Only Memory

What does this mean?

What are the Possible Causes of the DTC P1A68 Cadillac?

Faulty
harness is open or shorted
circuit poor electrical connection

How to Fix the DTC P1A68 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 P1A68 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.

Frequently Asked Questions about P1A68 Cadillac Code

1. What does OBDII code P1A68 in a Cadillac indicate?

The code P1A68 in a Cadillac relates to an issue with the Starter/Generator Control Module Programming Read Only Memory.

2. What are common symptoms of a P1A68 code in a Cadillac?

Common symptoms of a P1A68 code may include starting issues, reduced power output, and warning lights on the dashboard.

3. What are possible causes of the P1A68 code in a Cadillac?

Possible causes of the P1A68 code include a faulty Starter/Generator Control Module, wiring issues, or a need for programming updates.

4. How can I diagnose the P1A68 code in my Cadillac?

Diagnosing the P1A68 code typically involves using an OBDII scanner to read the code, checking the wiring connections, and performing a thorough inspection of the Starter/Generator Control Module.

5. Can I still drive my Cadillac with a P1A68 fault code?

It is not recommended to drive your Cadillac with an active P1A68 fault code, as it can lead to further damage and potential safety hazards.

6. How can I repair a P1A68 fault code in my Cadillac?

Repairing a P1A68 fault code may involve reprogramming the Starter/Generator Control Module, replacing any faulty components, or addressing wiring issues.

7. Do I need special tools to fix a P1A68 fault code in my Cadillac?

Repairing a P1A68 fault code may require special tools such as an OBDII scanner, diagnostic equipment, and programming tools specific to Cadillac vehicles.

8. Can a DIY enthusiast fix a P1A68 fault code in a Cadillac?

While some aspects of diagnosing and repairing a P1A68 fault code may be tackled by a DIY enthusiast, it is recommended to consult a professional mechanic for accurate diagnosis and repair.

9. Are there any recalls related to the P1A68 code in Cadillac vehicles?

Recalls related to the P1A68 code in Cadillac vehicles are rare, but it is advisable to check with a Cadillac dealership or the manufacturer for any relevant information.

10. How can I prevent the recurrence of a P1A68 fault code in my Cadillac?

Regular maintenance, timely software updates, and addressing any electrical issues promptly can help prevent the recurrence of a P1A68 fault code in your Cadillac.