For Shop Owners

P2305 - Ignition Coil 'B' Secondary Circuit

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3 What does this mean?

Possible causes

  • Faulty Ignition Coil 'B'
  • Ignition Coil 'B' harness is open or shorted
  • Ignition Coil 'B' circuit poor electrical connection
What does this mean?

Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)
  • Engine may be running rough

P2305 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 P2305 code sets when the PCM detects a short to voltage in the circuit.
OBDII Code P2305 - Ignition Coil 'B' Secondary Circuit -

P2305 Information for specific makes

P2305 AUDI Ignition Coil 2 Secundary Circuit
P2305 CHRYSLER Ignition Coil 'B' Secondary Circuit
P2305 DODGE Ignition Coil 'B' Secondary Circuit
P2305 FORD Ignition Coil 'B' Secondary Circuit
P2305 JEEP Ignition Coil 'B' Secondary Circuit
P2305 LINCOLN Ignition Coil 'B' Secondary Circuit
P2305 MERCURY Ignition Coil 'B' Secondary Circuit
P2305 SUZUKI Ignition Coil 2 Secundary Circuit
P2305 VOLKSWAGEN Ignition Coil 2 Secundary Circuit

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P2305 Comments

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Any information is appreciated. Thanks
Repair Importance Level: 3
1=Low 2=Medium 3=High
Repair Difficulty Level: 3
1=Easy 2=Moderate 3=Hard

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