Faulty ignition coil or coil pack; Damaged or corroded wiring in the ignition control circuit; Failed Engine Interface (EI) module or ignition module; Poor connection at the crankshaft position sensor or camshaft position sensor; Defective powertrain control module (PCM) ignition driver; Open or shorted ground circuit for the ignition system

DTC codes / Chrysler codes / P1322

P1322 · ChryslerEI System Or Ignition Control Missing

Q: What does code P1322 mean?

EI System Or Ignition Control Missing. P1322 on Chrysler vehicles indicates that the engine controller has lost the ignition control signal from the Engine Interface (EI) system, meaning it cannot confirm that the ignition coil or distributor is being triggered properly. The computer sets this code when it detects a missing or erratic signal on the ignition control circuit, often resulting in a no-start or rough-running condition.

P1322 on Chrysler vehicles indicates that the engine controller has lost the ignition control signal from the Engine Interface (EI) system, meaning it cannot confirm that the ignition coil or distributor is being triggered properly. The computer sets this code when it detects a missing or erratic signal on the ignition control circuit, often resulting in a no-start or rough-running condition.

SystemPowertrain

Code typeChrysler specific

SeverityHigh

Fix difficultyProfessional

AreaIgnition system and misfire

Symptoms you may notice

Engine cranks but will not start or starts only after long cranking
Intermittent stalling or sudden engine shutoff while driving
Rough idle or misfire under load
Often no symptoms besides the warning light if the fault is intermittent
Reduced power and poor fuel economy
Hard starting when the engine is hot or cold

Common causes, most likely first

Faulty ignition coil or coil pack
Damaged or corroded wiring in the ignition control circuit
Failed Engine Interface (EI) module or ignition module
Poor connection at the crankshaft position sensor or camshaft position sensor
Defective powertrain control module (PCM) ignition driver
Open or shorted ground circuit for the ignition system

How to diagnose and fix it

Inspect the ignition coil and coil pack for cracks, carbon tracking, or burn marks
Check all ignition system wiring and connectors for corrosion, chafing, or loose pins
Test the crankshaft and camshaft position sensors for proper signal and resistance
Verify battery voltage and ground integrity at the ignition module and PCM
Use a lab scope to confirm the ignition control signal is present and clean at the coil
Replace the ignition coil or ignition module if the signal is missing at the component
If all external components test good, diagnose the PCM ignition driver circuit for internal failure

What Chrysler techs check before replacing the PCM

A loose or corroded ground strap between the engine block and chassis often mimics a failed ignition module and sets P1322 without any faulty parts.
The EI system on Chrysler engines relies on a clean signal from the crankshaft position sensor, so a sensor that is only slightly out of specification can trigger this code before it fails completely.
Aftermarket alarm or remote start installations frequently tap into the ignition control wiring and introduce resistance that causes intermittent P1322 faults.
P1322 can be stored as a pending code after a single stall event and may not return, so clearing it and test-driving under the original conditions is a valid first step before parts replacement.
A weak battery or failing alternator can cause voltage drops that disrupt the ignition control signal, setting P1322 even though the ignition components themselves are healthy.

Can I keep driving with P1322?

Do not continue driving with an active P1322 because the engine can stall without warning, leaving you without power steering or brakes. If the code is intermittent and the engine runs normally, drive only to a repair shop and avoid highways or heavy traffic.

Tools that help

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Guidance is general and written for Chrysler vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.