P1A96 Cadillac Code - DC/DC Converter Stuck in 42-14 Volt Direction
Quick Answer
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 a 14 V DC converter. Common causes include Faulty Starter/Generator Control Module (SGCM), Starter/Generator Control Module (SGCM) harness is open or shorted, Starter/Generator Control Module (SGCM) 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
- P1A96 Cadillac indicates DC/DC Converter Stuck in 42-14 Volt Direction.
- Common causes
- Common causes include Faulty Starter/Generator Control Module (SGCM), Starter/Generator Control Module (SGCM) harness is open or shorted, Starter/Generator Control Module (SGCM) 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.
Code P1A96 Cadillac Description
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 start 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.
What are the Possible Causes of the DTC P1A96 Cadillac?
- Faulty Starter/Generator Control Module (SGCM)
- Starter/Generator Control Module (SGCM) harness is open or shorted
- Starter/Generator Control Module (SGCM) circuit poor electrical connection
How to Fix the DTC P1A96 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 P1A96 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.
Need more information about the P1A96 Cadillac code?
Need more information on how to fix the P1A96 Cadillac code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1A96 Cadillac code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P1A96 Cadillac Code
1. What does the OBDII code P1A96 mean on a Cadillac?
P1A96 indicates that the DC/DC converter is stuck in the 42-14 volt direction, meaning it is not functioning properly to regulate voltage between the high-voltage and 12-volt systems.
2. What are the symptoms of the P1A96 code in a Cadillac?
Common symptoms include a check engine light, issues with 12-volt system components, dim or flickering lights, charging system warnings, or reduced vehicle performance.
3. What causes the P1A96 code to appear in a Cadillac?
The code is typically caused by a malfunction in the DC/DC converter, wiring issues, poor connections, or a problem with the vehicle's high-voltage battery system.
4. Can driving with the P1A96 code cause further damage?
Yes, driving with this code could lead to insufficient power for the 12-volt system, potentially causing issues with critical components like lights, power steering, or the infotainment system.
5. How do you diagnose the P1A96 code on a Cadillac?
Diagnosis involves scanning the vehicle with an OBDII tool, inspecting the DC/DC converter, checking for wiring or connection issues, and testing the high-voltage and 12-volt systems.
6. How can the P1A96 code be repaired?
Repairs may include replacing the faulty DC/DC converter, fixing damaged wiring, cleaning or securing electrical connections, or addressing issues with the high-voltage battery.
7. What tools are needed to fix the P1A96 code?
You may need an OBDII scanner, a multimeter to test electrical circuits, and basic hand tools for repairing or replacing components.
8. Is the P1A96 code a common issue in Cadillacs?
While not extremely common, it can occur in hybrid or electric Cadillacs where a DC/DC converter is used to manage voltage between systems.
9. How much does it cost to fix the P1A96 code on a Cadillac?
Repair costs can vary but may range from $500 to $2,000 depending on whether the DC/DC converter needs replacement and labor costs.
10. Can a software update fix the P1A96 code?
In rare cases, a software update to the vehicle's control modules might resolve the issue, but hardware repairs are often required.
Discuss the causes and fixes for P1A96 Cadillac OBDII Code
Code P1A96 Cadillac comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
