Part #4886933

If the label on your original engine computer reads 4886933, this is the correct replacement PCM for your 1996 Dodge Ram Truck 8.0L Magnum V10. The module governs every aspect of powertrain operation — fuel injector pulse width, spark advance curves, idle air bypass, torque converter lockup, and OBD-II diagnostic monitoring.

This controller is built on hardware base 05014153AA(96MDL) — the same board used across all 52 calibration stamps for the 1996 Ram V10. It bolts to the inner fender on the driver side, tucked behind the battery tray where it stays protected from direct engine heat and road spray.

Our remanufacturing process begins with a full teardown and ultrasonic cleaning of the original PCM board. Capacitors, driver chips, and any components showing signs of thermal stress are replaced. The rebuilt unit is run through an automated test cycle that simulates cranking, idle, cruise, and wide-open-throttle conditions before being flashed to your truck's VIN.

Replacing Part Number 4886933

Swap time is roughly 15 to 20 minutes. Start by disconnecting the battery. The PCM sits on the driver-side inner fender, behind the battery tray. Squeeze the locking tabs on each harness connector and pull them straight off, then unbolt the bracket. Mount the new module, reconnect both plugs, and reattach the battery. Since we flash the VIN, immobilizer codes, and calibration data before shipping, the truck starts immediately — no programming appointment needed.

Symptoms That Point to Part 4886933

A failing PCM (part #4886933) on the 1996 Ram V10 commonly produces these warning signs:

• Crank / No-Start Condition: The starter motor cranks the engine at normal speed but the engine will not fire due to loss of fuel injector pulse or ignition coil trigger signal from the PCM.
• OBD-II Scanner No-Communication: A handheld scan tool or shop diagnostic computer reports no communication when connected to the 16-pin data link connector under the dash, indicating the PCM is not responding on the J1850 data bus.
• Automatic Transmission Limp Mode: The four-speed automatic defaults to second or third gear and will not shift through all forward gears, often accompanied by the check engine light and transmission-related fault codes.
• 5-Volt Sensor Reference Dropout: The internal voltage regulator fails, dropping the 5-volt reference line that feeds the MAP sensor, throttle position sensor, and other analog inputs, causing multiple simultaneous DTCs.

When Calibration 4886933 Was Issued

The stamp 4886933 identifies when in the 1996 model year this PCM calibration was released. The 488693x stamps are the final seven-digit production run for this PCM. Chrysler later supplied Mopar remanufactured service parts from this same calibration, marked with an R prefix: R4886930, R4886932, and R4886933. It is stamp 4 of 5 in the 488693 group, between 4886932 and 4886934.

Alternate Part Number Formats for 4886933

Dealer and interchange listings often rewrite 4886933 as 04886933 or P04886933. Aftermarket catalogs may show P4886933. The calibration does not change. Only the printed form does.

Salvage Interchange Numbers for 4886933

The Hollander cross-reference for part 4886933 is 590-04172 and 590-04173. Recyclers use those two numbers to catalog this V10 powertrain module. Confirm the label reads 4886933 before treating a yard unit as this calibration.

OBD-II Codes When 4886933 Fails

4886933 is stamp 4 of 5 in the 488693 group. Shops working on this 488693 calibration most often find the following OBD-II codes already stored:

• P0688 — Auto Shutdown Relay Control Circuit: P0688 means the controller is not driving the ASD relay control circuit correctly. A no-start with good fuel pressure and a good crank signal often ends at this code on a failed late-production module.
• P0562 — System Voltage Low: P0562 reports system voltage below the threshold the controller expects. On late 1996 calibrations it often traces to the PCM once the alternator and battery cables have been ruled out.

Emissions Certification for 4886933

This calibration meets Federal (50-state) emission standards for the 1996 model year. Part 4886933, stamp 4 of 5 in the 488693 group, was certified under that 1996 federal standard.

Manufacturing Date Suffixes after 4886933

Chrysler used letter suffixes (AA, AB, AC, etc.) after the base number to indicate manufacturing date. All suffixes for 4886933 are functionally identical and interchangeable. The letters record when that individual module was built. 4886933AA and 4886933AB both order as 4886933.