Engine-Codes - Acura - P0641 Acura

P0641 Acura Code - Sensor Reference Voltage 'A' Malfunction

- Code Popularity: 7,752 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P0641 Acura?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Manifold Absolute Pressure (MAP) sensor VCC line short to power
  • Fuel rail pressure sensor VCC line short to power
  • Crankshaft Position (CKP) sensor VCC line short to power
  • Throttle body VCC line short to power
  • Accelerator Pedal Position (APP) sensor VCC line short to power
  • MAP sensor VCC line short to ground
  • Fuel rail pressure sensor VCC line short to ground
  • CKP sensor VCC line short to ground
  • Throttle body VCC line short to ground
  • APP sensor A/B VCC line short to ground
  • PCM internal circuit failure
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How to Fix the DTC P0641 Acura?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P0641 Acura code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

What Does the P0641 Acura Code Mean?

The Powertrain Control Module (PCM) is equipped with a voltage monitor (5 V power source) to supply a stable 5 V to each sensor as a reference voltage. The correct voltage for the sensors are loaded in the Central Processing Unit (CPU) of the PCM (A/D input) and when the sensor power voltage is a set value (high or low) for a certain time, the PCM detects a malfunction and stores a Diagnostic Trouble Code (DTC).

P0641 Acura Code - Sensor Reference Voltage 'A' Malfunction

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