What Does P2330 Mean?
Ignition Coil 'K' Primary Control Circuit Low indicates the ECM has detected a low-voltage condition on the primary control circuit of ignition coil K, typically associated with cylinder 11. The control wire is being pulled to ground abnormally, preventing proper ignition coil charging and spark generation.
Common Causes
35%
Short to ground in the coil K control wiring or connector
30%
Ignition coil K internal primary winding short
20%
Water intrusion or corrosion at the coil K electrical connector
15%
ECM coil driver transistor shorted internally
Diagnostic Steps
1
Step 1: Disconnect coil K and measure primary winding resistance. Expect 0.4-2.0 ohms. A reading significantly below spec indicates an internal short.
2
Step 2: With coil disconnected, measure resistance from the control pin to chassis ground. Should read OL (infinite). Any measurable resistance indicates a short to ground in the harness.
3
Step 3: Visually trace the wiring harness from coil K to the ECM, looking for pinched, chafed, or heat-damaged insulation.
4
Step 4: Check for TSBs related to ignition coil harness routing or connector issues specific to this engine configuration.
5
Step 5: If wiring checks good, swap coil K with an adjacent coil. Clear codes and test drive. If fault follows, replace the coil.
Estimated Repair Cost
$75 - $400
Parts + labor, varies by vehicle and location
Ignition Coil 'K' Primary Control Circuit Low indicates the ECM has detected a low-voltage condition on the primary control circuit of ignition coil K, typically associated with cylinder 11. The control wire is being pulled to ground abnormally, preventing proper ignition coil charging and spark gen...
The most common cause of P2330 (Ignition Coil "K" Primary Control Circuit Low) is: Short to ground in the coil K control wiring or connector
Typical repair costs for P2330 range from $75 to $400, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Cylinder 11 will misfire, causing noticeable rough running and power loss. Drive cautiously to avoid catalytic converter overheating.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2330 to identify the root cause.
OBDHut Mobile App
Scan codes directly from your car with the OBDHut app.
Coming Soon
Quick Info
Category
Powertrain
System
Ignition System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
