AutoCodes – Honda – P1D9A Honda

P1D9A Honda Code - Electric Powertrain Coolant Pump Control Malfunction

Quick Answer

The motor control module (traction) cools the motor power inverter (MPI) module (traction) and the voltage control unit (VCU) by issuing operation command to the electric motor control module coolant pump and by recirculating the coolant. Common causes include Water pipe leak, Water pipe clogged, Faulty Electric Powertrain Coolant Pump. 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: P1D9A Honda indicates Electric Powertrain Coolant Pump Control Malfunction.
Common causes: Common causes include Water pipe leak, Water pipe clogged, Faulty Electric Powertrain Coolant Pump.
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 2,378

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 Apr 17, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1D9A Honda Description

The motor control module (traction) cools the motor power inverter (MPI) module (traction) and the voltage control unit (VCU) by issuing operation command to the electric motor control module coolant pump and by recirculating the coolant. The motor control module (traction) monitors actual revolution speed received from the electric motor control module coolant pump and detects a malfunction and stores a DTC when the actual revolution speed is equal to or less than the prescribed lower limit for the prescribed time or more (foreign matter contamination, seizure) or when the actual revolution speed is equal to or more than the prescribed upper limit (over-revolution) continuously for the prescribed time or more.

OBDII Code P1D9A Honda - Electric Powertrain Coolant Pump Control Malfunction - AutoCodes.com — P1D9A Honda Code - Electric Powertrain Coolant Pump Control Malfunction

What does this mean?

What are the Possible Causes of the DTC P1D9A Honda?

Water pipe leak
Water pipe clogged
Faulty Electric Powertrain Coolant Pump
Electric Powertrain Coolant Pump harness is open or shorted
Electric Powertrain Coolant Pump circuit poor electrical connection
Faulty Motor Control Module (Traction)

How to Fix the DTC P1D9A Honda?

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 P1D9A Honda 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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Need Help with the Code?

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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 P1D9A Honda Code

1. What are the common symptoms of OBDII code P1D9A in a Honda related to Electric Powertrain Coolant Pump Control Malfunction?

- Common symptoms may include overheating of the electric powertrain, reduced performance, and potential illumination of the check engine light.

2. What are some possible causes of the Electric Powertrain Coolant Pump Control Malfunction in a Honda triggering code P1D9A?

- Possible causes can include issues with the coolant pump control module, a faulty electric coolant pump, wiring or connection problems, or software issues.

3. How can I diagnose the Electric Powertrain Coolant Pump Control Malfunction in my Honda when OBDII code P1D9A appears?

- Diagnosis typically involves checking the coolant pump and its connections, testing the control module, inspecting for any wiring issues, and scanning for related codes.

4. Can I continue driving my Honda with the OBDII code P1D9A related to Electric Powertrain Coolant Pump Control Malfunction?

- It is not recommended to drive your vehicle when this code appears, as it can lead to overheating and potential damage to the electric powertrain components.

5. What are some repair tips for addressing OBDII code P1D9A in a Honda due to Electric Powertrain Coolant Pump Control Malfunction?

- Repair tips may include checking and repairing any wiring issues, replacing the electric coolant pump if necessary, updating software, and ensuring proper coolant levels.

6. How much does it typically cost to repair the Electric Powertrain Coolant Pump Control Malfunction triggering OBDII code P1D9A in a Honda?

- The cost of repair can vary depending on the exact cause of the malfunction, but it may involve expenses for parts, labor, and potential diagnostic fees.

7. Is it possible to reset the OBDII code P1D9A related to Electric Powertrain Coolant Pump Control Malfunction in a Honda without fixing the underlying issue?

- While you can clear the code temporarily, it is crucial to address the root cause to prevent further damage and ensure the proper functioning of the electric powertrain system.

8. Can a DIY enthusiast fix the Electric Powertrain Coolant Pump Control Malfunction triggering OBDII code P1D9A in a Honda?

- Depending on the specific issue, some DIY repairs like checking connections or replacing components may be possible, but complex electrical or software-related problems may require professional assistance.

9. Are there any recalls or technical service bulletins related to OBDII code P1D9A in Honda vehicles for Electric Powertrain Coolant Pump Control Malfunction?

- It is advisable to check with Honda authorized service centers or visit the official Honda website to inquire about any recalls or technical service bulletins related to this specific issue.