Part #R4886933

The 1996 Dodge Ram 8.0L V10 uses one module — stamped R4886933 — to run both the engine and the automatic transmission. This PCM processes signals from the MAP sensor, throttle position sensor, crankshaft and camshaft position sensors, oxygen sensors, and vehicle speed sensor to maintain proper air-fuel ratio, ignition timing, and shift scheduling.

The R prefix on R4886933 identifies it as Chrysler's official remanufactured service part number, replacing production calibration 4886933. Internally, the hardware and calibration data are identical — the R-prefix simply indicates the unit was rebuilt and re-certified by Mopar's authorized remanufacturing program.

Under the label, every 1996 Ram V10 PCM runs on the same 05014153AA(96MDL) circuit board. Chrysler located the module on the driver-side inner fender panel behind the battery tray — a position chosen to isolate the electronics from excessive underhood temperatures while keeping the harness run short to the engine sensors.

We strip the unit down to the bare PCB, inspect every solder joint and trace under magnification, replace any degraded components, and reassemble with fresh thermal compound and weatherseals. The rebuilt module is then bench-tested across simulated drive cycles and programmed to your specific VIN — calibration, immobilizer security, and the latest available software revision for this platform.

Installing Part R4886933

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 R4886933

Common diagnostic indicators that part number R4886933 needs replacement on the 1996 Dodge Ram V10 include:

• 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.
• Dead Pedal / Sudden Throttle Loss: The throttle response drops to zero while driving, the engine falls to idle, and the truck limps at low speed until the ignition is cycled off and back on.

Production Timing for R4886933

Part number R4886933 dates to a specific point in the 1996 Ram 8.0L V10 production calendar. The R488693x numbers are Mopar authorized remanufactured service replacements, not assembly-line stamps. R4886933 is the service part for production calibration 4886933, drawn from the final seven-digit 488693x run. The reman service numbers in this group are R4886930, R4886932, and R4886933. It is the last of 3 stamps in the R488693 group, following R4886932.

Other Ways R4886933 Is Written

R4886933 is also printed as R04886933, PR4886933, and PR04886933. These are the same remanufactured service number. A leading zero, a P catalog prefix, or both is only a printing difference. The production calibration this reman replaces is 4886933.

Hollander Cross-Reference for R4886933

Hollander lists R4886933 under interchange numbers 590-04172 and 590-04173. Both numbers identify the 1996 Dodge Ram 8.0L V10 PCM. The Hollander entry covers the hardware. The calibration stamped on the case still has to be R4886933.

Fault Codes Tied to R4886933

On this calibration R4886933 (stamp 3 of 3 in the R488693 group), the codes below are the ones commonly stored when the module itself has failed. They are the pattern for the R488693 family, which is the Mopar authorized remanufactured service replacements.

• P0601 — Internal Memory Checksum Error: P0601 means the controller's memory checksum does not match. On an R-prefix service unit, that failure points back at the reman module's stored calibration.
• P1694 — No CCD Message from PCM: P1694 is a missing CCD message from the PCM, stored when the remanufactured module's bus driver quits. The rest of the truck loses the PCM on the data bus.

Emissions Certification for R4886933

This calibration meets Federal (50-state) emission standards for the 1996 model year. That is the certification on stamp R4886933, from the Mopar authorized remanufactured service replacements.

Letter Suffixes on R4886933

Chrysler used letter suffixes (AA, AB, AC, etc.) after the base number to indicate manufacturing date. All suffixes for R4886933 are functionally identical and interchangeable. A label stamped R4886933AA, R4886933AB, or R4886933AC is this same calibration.