Part #4886864

Part number 4886864 is an OEM Powertrain Control Module (PCM) engineered for the 1996 Dodge Ram 2500 and 3500 Truck with the 8.0L Magnum V10. This ten-cylinder engine was exclusive to the heavy-duty Ram lineup and requires a dedicated PCM to manage its sequential multiport fuel injection, distributorless ignition, and electronically controlled automatic transmission.

Hardware code 05014153AA(96MDL) is printed on the module's circuit board and is common to every 1996 Ram 8.0L V10 PCM regardless of calibration stamp. The unit attaches to the driver-side inner fender behind the battery tray via two or three mounting bolts, with the wiring harness connecting through two large multi-pin Mopar weatherpack plugs.

Before shipping, every module goes through a multi-stage remanufacturing process: board-level inspection under magnification, replacement of known failure-prone components (power transistors, capacitors, voltage regulators), full functional bench testing, and custom VIN programming with your truck's exact 17-digit identification number.

Installing Part 4886864

Installation takes about 20 minutes with basic hand tools. Disconnect the negative battery cable, locate the existing module on the driver-side inner fender behind the battery tray, unplug the two wiring harness connectors, and remove the mounting bolts. Reverse the process with the replacement unit. Because the PCM arrives pre-programmed to your VIN, there is no dealer visit, no locksmith, and no scan tool reflash required — turn the key and drive.

Symptoms That Point to Part 4886864

If the original 4886864 module is going bad in your 1996 Ram 8.0L V10, expect some combination of the following:

• 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.
• Random Multiple Fault Codes: The check engine light illuminates with a cluster of seemingly unrelated codes — oxygen sensor, MAP sensor, TPS, vehicle speed sensor — pointing to an internal PCM failure rather than individual sensor problems.

Production Timing for 4886864

The stamp 4886864 identifies when in the 1996 model year this PCM calibration was released. The 488686x stamps are late production. They were issued toward the end of 1996 Ram 8.0L V10 assembly, after the 488674x and 488679x groups and before the final seven-digit run, 488693x. It is stamp 2 of 5 in the 488686 group, between 4886863 and 4886865.

Other Ways 4886864 Is Written

4886864 also appears as P04886864, 04886864, and P4886864. These are the same number. Different sources print them differently: a P catalog prefix, a leading zero that fills the eight-digit parts field, or both.

Hollander Cross-Reference for 4886864

The Hollander cross-reference for part 4886864 is 590-04172 and 590-04173. Recyclers use those two numbers to catalog this V10 powertrain module. Confirm the label reads 4886864 before treating a yard unit as this calibration.

Fault Codes Tied to 4886864

On this calibration 4886864 (stamp 2 of 5 in the 488686 group), the codes below are the ones commonly stored when the module itself has failed. They are the pattern for the 488686 family, which is the late-production group.

• P0688 — Auto Shutdown Relay Control Circuit: The auto-shutdown relay control circuit is flagged. The engine can crank with no injector pulse or spark if the PCM can no longer operate the ASD relay.
• P0562 — System Voltage Low: The PCM stores a low system-voltage code. After charging voltage at the battery checks out, the usual cause on these later stamps is the module's internal power supply.

Emissions Certification for 4886864

This calibration meets Federal (50-state) emission standards for the 1996 model year. That is the certification on stamp 4886864, from the late-production group.

Manufacturing Date Suffixes after 4886864

Chrysler used letter suffixes (AA, AB, AC, etc.) after the base number to indicate manufacturing date. All suffixes for 4886864 are functionally identical and interchangeable. A label stamped 4886864AA, 4886864AB, or 4886864AC is this same calibration.