Engine-Codes - Generic - B0521

B0521 Code - Tachometer Signal Circuit Malfunction

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

|B0521 code possible causes

  • Faulty Instrument Panel Cluster (IPC)
  • Instrument Panel Cluster (IPC) harness is open or shorted
  • Instrument Panel Cluster (IPC) circuit poor electrical connection

|How is the B0521 code repair?

Start by checking 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's pins.

|What is the cost to diagnose the B0521 code

Labor: 1.0

The cost to diagnose the B0521 code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|What are B0521 code possible symptoms?

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

|What is B0521 code meaning?

The Instrument Panel Cluster (IPC) receives engine RPM information from the Powertrain Control Module (PCM) on a dedicated engine speed input to IPC. IPC also receives engine RPM data on the serial data line. IPC monitors engine RPM output information sent from PCM for an out of range condition. The PCM sets the Diagnostic Trouble Code (DTC) when the IPC detects that the engine RPM is at least 7400 RPM.

|Need more information with the B0521 code?

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|B0521 code information for specific makes

|Need help with a B0521 code?

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