P0320 on RAM
Ignition/Distributor Engine Speed Input Circuit Malfunction
P0320 on RAM vehicles indicates ignition/distributor engine speed input circuit malfunction. Au7o has documented this code across 1 RAM model — most commonly on 1500. The ECM/PCM detected a malfunction in the ignition or distributor engine-speed (RPM) input circuit. This circuit supplies the engine-speed reference used for spark timing and fuel control; a general fault here (open, short, or signal loss) is flagged as P0320. On distributorless systems this maps to the crank/ignition RPM reference. Typical repair costs on RAM range from $50 to $250, depending on the specific model and root cause.
Common Causes of P0320
- •Faulty crankshaft/distributor RPM pickup sensor
- •Damaged wiring or connector in the RPM input circuit
- •Poor ground or corroded connector
- •Faulty ignition module
- •Air gap or damaged reluctor/trigger wheel
P0320 on RAM by Model
RAM 1500(1 issue)
- Magnum Camshaft/Crankshaft Position Sensor Failure — Hot Stall and No-Restart1994-2001
The 3.9/5.2/5.9 Magnum uses a camshaft position sensor inside the distributor plus a crankshaft position sensor on the bell housing. These sensors are heat-sensitive and fail intermittently — the engine stalls or dies when hot and refuses to restart until it cools, or cranks-but-won't-start with no other symptom. Corroded/loose sensor connectors cause the same behavior.
Looking for P0320 on a different make?
View P0320 across all makes →Frequently Asked Questions
What does P0320 mean on RAM?▼
P0320 stands for "Ignition/Distributor Engine Speed Input Circuit Malfunction." The ECM/PCM detected a malfunction in the ignition or distributor engine-speed (RPM) input circuit. This circuit supplies the engine-speed reference used for spark timing and fuel control; a general fault here (open, short, or signal loss) is flagged as P0320. On distributorless systems this maps to the crank/ignition RPM reference. On RAM specifically, this code is documented across 1 model.
What causes P0320 on RAM vehicles?▼
Common causes on RAM: Faulty crankshaft/distributor RPM pickup sensor, Damaged wiring or connector in the RPM input circuit, Poor ground or corroded connector, Faulty ignition module, Air gap or damaged reluctor/trigger wheel. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0320 on a RAM?▼
Repair costs on RAM range from $50 to $250, depending on the specific model and root cause.
Which RAM models have P0320 documented?▼
Au7o has documented P0320 on 1 RAM model: 1500.