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AutoCodes – Acura – P1381 Acura

P1381 Acura Code - Cylinder Position Sensor Intermittent Interruption

Quick Answer

The Crankshaft Position (CKP) Sensor determines the timing for fuel injection and ignition of each cylinder and also detects engine speed. Common causes include Faulty Cylinder Position Sensor, Cylinder Position Sensor harness is open or shorted, Cylinder Position Sensor 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
P1381 Acura indicates Cylinder Position Sensor Intermittent Interruption.
Common causes
Common causes include Faulty Cylinder Position Sensor, Cylinder Position Sensor harness is open or shorted, Cylinder Position Sensor 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 8,385
How popular is this code, among other codes? Low
What is this?
Table of contents Created and updated by William Orellana on Apr 23, 2023
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Code P1381 Acura Description

The Crankshaft Position (CKP) Sensor determines the timing for fuel injection and ignition of each cylinder and also detects engine speed. The Top Dead Center (TDC) Sensor determines ignition timing at start-up (cranking) and when the crank angle is abnormal. The Cylinder Position (CYP) Sensor detects the position of the No. 1 cylinder for the sequential fuel injection to each cylinder. The CKP/TDC/CYP sensors are built into the distributor. If intermittent interruption Cylinder Position (CYP) sensor pulsing signals are detected, a malfunction is detected, and the P1381 Diagnostic Trouble Code (DTC) is stored.
OBDII Code P1381 Acura - Cylinder Position Sensor Intermittent Interruption - AutoCodes.com
P1381 Acura Code - Cylinder Position Sensor Intermittent Interruption
What does this mean?

What are the Possible Causes of the DTC P1381 Acura?

  • Faulty Cylinder Position Sensor
  • Cylinder Position Sensor harness is open or shorted
  • Cylinder Position Sensor circuit poor electrical connection

How to Fix the DTC P1381 Acura?

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 P1381 Acura 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 P1381 Acura code?

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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 P1381 Acura Code

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