What Does P2322 Mean?
The PCM has detected an abnormally high voltage in the primary control circuit for ignition coil H (typically cylinder 8). This indicates an open circuit, short to voltage, or coil driver circuit issue.
Common Causes
35%
Open circuit in wiring between PCM and ignition coil H
30%
Ignition coil H internal open circuit or failure
20%
Poor connection or corrosion at coil H connector
10%
PCM internal coil driver circuit failure
5%
Short to voltage in coil control circuit
Diagnostic Steps
1
Step 1: Inspect coil H connector and PCM connector for loose pins, corrosion, or terminal damage
2
Step 2: Test continuity between coil H control terminal and PCM connector pin
3
Step 3: Measure primary coil resistance and compare to manufacturer specifications
4
Step 4: Verify battery voltage at coil power supply terminal with key on
5
Step 5: Swap coil H with another cylinder to determine if fault follows coil or stays with circuit
Estimated Repair Cost
$150 - $850
Parts + labor, varies by vehicle and location
The PCM has detected an abnormally high voltage in the primary control circuit for ignition coil H (typically cylinder 8). This indicates an open circuit, short to voltage, or coil driver circuit issue.
The most common cause of P2322 (Ignition Coil "H" Primary Control Circuit High) is: Open circuit in wiring between PCM and ignition coil H
Typical repair costs for P2322 range from $150 to $850, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Will cause cylinder 8 misfire resulting in rough running, power loss, and potential catalytic converter damage if driven extensively.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2322 to identify the root cause.
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Quick Info
Category
Powertrain
System
Ignition System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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