AutoCodes – Generic – P1D64

P1D64 Code - Collision Detection Signal Malfunction

Quick Answer

The battery condition monitor module receives pulse signals of crash cutoff information from the Supplemental Restraint System (SRS) Unit. Common causes include Faulty Supplemental Restraint System (SRS) Unit, Supplemental Restraint System (SRS) Unit harness is open or shorted, Supplemental Restraint System (SRS) Unit 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: P1D64 indicates Collision Detection Signal Malfunction.
Common causes: Common causes include Faulty Supplemental Restraint System (SRS) Unit, Supplemental Restraint System (SRS) Unit harness is open or shorted, Supplemental Restraint System (SRS) Unit 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 3,468

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 16, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1D64 Description

The battery condition monitor module receives pulse signals of crash cutoff information from the Supplemental Restraint System (SRS) Unit. If the battery condition monitor module does not receive pulse signals from the SRS unit, the battery condition monitor module determines it as a malfunction and stores a DTC.

OBDII Code P1D64 - Collision Detection Signal Malfunction - AutoCodes.com — P1D64 Code - Collision Detection Signal Malfunction

What does this mean?

What are the Possible Causes of the DTC P1D64?

Faulty Supplemental Restraint System (SRS) Unit
Supplemental Restraint System (SRS) Unit harness is open or shorted
Supplemental Restraint System (SRS) Unit circuit poor electrical connection
Faulty Battery Condition Monitor Module

How to Fix the DTC P1D64?

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 P1D64 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 P1D64 code?

Need more information on how to fix the P1D64 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1D64 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1D64 Acura — Collision Detection Signal Malfunction
P1D64 Honda — Collision Detection Signal Malfunction

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 P1D64 Code

1. What does the OBDII code P1D64 mean?

P1D64 indicates a Collision Detection Signal Malfunction, which typically relates to an issue with the vehicle's crash detection system or communication between sensors and control modules.

2. What are the common symptoms of code P1D64?

Symptoms may include a malfunction indicator light (MIL) on the dashboard, disabled collision detection or avoidance features, and possible warnings about safety system faults.

3. What causes the P1D64 code to appear?

Common causes include faulty collision detection sensors, damaged wiring or connectors, a malfunctioning control module, or software glitches in the safety system.

4. Is it safe to drive with a P1D64 code?

While the vehicle may still be drivable, safety systems like collision avoidance or pre-crash features may not function properly, increasing the risk of accidents.

5. How do you diagnose a P1D64 code?

A technician will typically use a scan tool to read the code, inspect the collision detection system sensors and wiring, and perform a system test to identify faulty components.

6. Can a dead battery cause the P1D64 code?

Yes, a low or depleted battery can cause communication errors between modules, which may trigger the P1D64 code.

7. How can you fix the P1D64 code?

Repairs may include replacing faulty sensors, repairing or replacing damaged wiring, updating the control moduleâ€™s software, or recalibrating the collision detection system.

8. How much does it cost to fix a P1D64 code?

Repair costs depend on the exact issue but can range from $100 for minor wiring repairs to over $1,000 for sensor or module replacement.

9. Can you clear the P1D64 code without fixing it?

Clearing the code without addressing the underlying problem may temporarily turn off the warning light, but the issue will likely return and could compromise safety features.

10. What should you do if the P1D64 code reappears after repairs?

If the code comes back, have the system re-inspected to ensure all repairs were done correctly and no additional faults are present.