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AutoCodes - Generic - B0521

B0521 Code - Tachometer Signal Circuit Malfunction

- Code Popularity: 2,229 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC B0521?

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 Instrument Panel Cluster (IPC)
  • Instrument Panel Cluster (IPC) harness is open or shorted
  • Instrument Panel Cluster (IPC) circuit poor electrical connection
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How to Fix the DTC B0521?

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 B0521 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 B0521 Description

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.

OBDII Code B0521 - Tachometer Signal Circuit Malfunction - AutoCodes.com
B0521 Code - Tachometer Signal Circuit Malfunction

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Code B0521 comments

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