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P2321 Audi Code - Ignition Coil 8 Primary Control Circuit Low

- Code Popularity: 1,185 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P2321 Audi?

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 Ignition Coil 8
  • Ignition Coil 8 harness is open or shorted
  • Ignition Coil 8 circuit poor electrical connection
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How to Fix the DTC P2321 Audi?

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 P2321 Audi 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)
  • Engine may be running rough

Code P2321 Audi Description

The current flow, or dwell, through the primary ignition coil is controlled by the Powertrain Control Module (PCM) by providing a switched ground path through the ignition coil driver to ground. When the ignition coil driver is switched on, current rapidly builds up to a maximum value, determined by the coil inductance and resistance. When the current is switched off, the magnetic field collapses which induces a secondary high voltage surge and the spark plug is fired. This high voltage surge creates a flyback voltage which the PCM uses as a feedback during the ignition diagnostics. The PCM continuously monitors the ignition system for concerns. The P2321 code sets when the PCM detects a short to voltage in the circuit.

OBDII Code P2321 Audi - Ignition Coil 8 Primary Control Circuit Low - AutoCodes.com
P2321 Audi Code - Ignition Coil 8 Primary Control Circuit Low

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Code P2321 Audi comments

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