AutoCodes – Mercury – P1A10 Mercury

P1A10 Mercury Code - Hybrid Powertrain Control Module Engine Disabled

Quick Answer

The Powertrain Control Module (PCM) monitors the Hybrid Powertrain Control Module. Common causes include Faulty Traction Battery Control Module (TBCM), Traction Battery Control Module (TBCM) harness is open or shorted, Traction Battery Control Module (TBCM) 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: P1A10 Mercury indicates Hybrid Powertrain Control Module Engine Disabled.
Common causes: Common causes include Faulty Traction Battery Control Module (TBCM), Traction Battery Control Module (TBCM) harness is open or shorted, Traction Battery Control Module (TBCM) 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 2,845

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 Jun 14, 2020

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

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

Code P1A10 Mercury Description

The Powertrain Control Module (PCM) monitors the Hybrid Powertrain Control Module. The PCM sets the OBDII code when the Hybrid Powertrain Control Module is not to factory specifications. This is an informational DTC and it can be set as a result of the vehicle operating with the engine disabled, the vehicle operating in the NEUTRAL for an extended period of time, or the vehicle operating with a traction battery concern.

OBDII Code P1A10 Mercury - Hybrid Powertrain Control Module Engine Disabled - AutoCodes.com — P1A10 Mercury Code - Hybrid Powertrain Control Module Engine Disabled

What does this mean?

What are the Possible Causes of the DTC P1A10 Mercury?

Faulty Traction Battery Control Module (TBCM)
Traction Battery Control Module (TBCM) harness is open or shorted
Traction Battery Control Module (TBCM) circuit poor electrical connection

How to Fix the DTC P1A10 Mercury?

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 does this mean?

Code Tech Notes

When the P1A10 code is set alone, and no other Diagnostic Trouble Code (DTC) is present in the TBCM or the TCM, this DTC may indicate that the transmission is in NEUTRAL for an extended period of time while the vehicle is enabled and the hybrid system shut down to protect the traction battery from discharging. Advise the customer of the conditions that may cause this DTC.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1A10 Mercury 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 P1A10 Mercury code?

Need more information on how to fix the P1A10 Mercury code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1A10 Mercury 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 P1A10 Mercury Code

1. What does the OBDII code P1A10 mean on a Mercury?

P1A10 indicates that the Hybrid Powertrain Control Module has detected an issue leading to the engine being disabled, often related to hybrid system malfunctions.

2. What are the common symptoms of the P1A10 code?

Symptoms include the engine not starting, reduced hybrid system performance, warning lights on the dashboard, and possible loss of power.

3. What causes the P1A10 code to appear?

Common causes include a fault in the Hybrid Powertrain Control Module, damaged wiring or connectors, a malfunctioning hybrid battery, or issues with related sensors.

4. Can I drive my Mercury with the P1A10 code?

Driving with the P1A10 code is not recommended, as the engine may remain disabled or the vehicle could lose power unexpectedly.

5. How is the P1A10 code diagnosed?

A mechanic will use a scan tool to retrieve the code, inspect the Hybrid Powertrain Control Module, check wiring and connectors, and test the hybrid battery and sensors.

6. How do I fix the P1A10 code on my Mercury?

Repairs may include replacing the Hybrid Powertrain Control Module, repairing damaged wiring, reprogramming the module, or addressing issues with the hybrid battery or sensors.

7. Does the P1A10 code require reprogramming of any components?

Yes, in some cases, the Hybrid Powertrain Control Module may need to be reprogrammed after repairs to resolve the issue.

8. Can a weak hybrid battery cause the P1A10 code?

Yes, a weak or failing hybrid battery can trigger the P1A10 code as it may affect the hybrid systemâ€™s operation.

9. How much does it cost to repair the P1A10 code?

The cost varies depending on the root cause, ranging from $100 for minor wiring repairs to over $1,000 for module replacement or hybrid battery repairs.

10. Can the P1A10 code be caused by a software issue?

Yes, outdated or corrupted software in the Hybrid Powertrain Control Module can sometimes trigger the P1A10 code and may require an update.