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P1D77 Honda Code - I1 Current Sensor Range/Performance Problem

- Code Popularity: 875 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P1D77 Honda?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty I1 Current Sensor
  • I1 Current Sensor harness is open or shorted
  • I1 Current Sensor circuit poor electrical connection
  • Faulty Motor Control Module (Generator)
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How to Fix the DTC P1D77 Honda?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1D77 Honda code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

Code P1D77 Honda Description

The voltage control unit (VCU) controls the voltage and electric power between the battery module and the motor power inverter (MPI) module (traction/generator) according to the command from the motor control module (generator). The motor control module (generator) detects current by the I1 current sensor (primary side current) within the VCU to protect the internal switching device and the reactor. The motor control module (generator) detects a malfunction and stores a DTC when variation of the difference with the VCU output current is equal to or more than the prescribed current continuously for the prescribed time or more while operating with small difference in the voltage between the VCU input and output.

OBDII Code P1D77 Honda - I1 Current Sensor Range/Performance Problem - AutoCodes.com
P1D77 Honda Code - I1 Current Sensor Range/Performance Problem

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Code P1D77 Honda comments

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