P2309 MERCURY - Ignition Coil 'D' Primary Control Circuit Low
P2309 MERCURY Possible Causes
- Faulty Ignition Coil 'D'
- Ignition Coil 'D' harness is open or shorted
- Ignition Coil 'D' circuit poor electrical connection
First diagnose P2309 MERCURY code
Check 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 terminals.
Cost of diagnosing the P2309 MERCURY code
Labor: 1.0The cost of diagnosing the P2309 MERCURY code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
P2309 MERCURY Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Engine may be running rough
P2309 Mercury DescriptionThe 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 P2309 code sets when the PCM detects a short to voltage in the circuit.
P2309 MERCURY More InformationNeed more information on how to fix the P2309 MERCURY code?
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