Overview
The ZF 6073.224.067 EPROM Memory is a critical electronic control component designed exclusively for the BP 230 series automatic transmissions. This OEM genuine part stores the transmission’s calibration data, shift logic, and adaptive learning parameters, ensuring precise gear engagement and optimal performance under varying load conditions. Located within the transmission control unit (TCU) assembly, the EPROM memory chip interfaces directly with the main processor to regulate hydraulic pressure and shift timing. The SKU 6073.224.067 is factory-programmed to match the specific torque converter and gearset characteristics of the BP 230, making it a direct replacement for failed units. When paired with the TRANSMISSION HOUSING and HOUS.FRONT SECT, this EPROM ensures seamless communication between mechanical and electronic systems.
Symptoms of Failure
- Erratic shift patterns or delayed engagement – When the EPROM loses data integrity, the transmission may hesitate before shifting or skip gears entirely, especially during cold starts.
- Transmission stuck in limp mode – A corrupted memory chip often forces the TCU into a fail-safe mode, limiting the vehicle to a single gear (usually 2nd or 3rd) to prevent further damage.
- Incorrect torque converter lockup – Faulty EPROM data can cause the torque converter clutch to engage too early or too late, leading to shuddering or increased fuel consumption.
- Intermittent loss of reverse gear – Memory corruption may prevent the TCU from correctly commanding reverse hydraulic circuits, resulting in no reverse engagement until the system is power-cycled.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 6073.224.067 |
| OEM Reference | ZF BP 230 Series |
| Memory Type | EPROM (Erasable Programmable Read-Only Memory) |
| Storage Capacity | 64 KB (estimated) |
| Operating Voltage | 5V DC |
| Operating Temperature | -40°C to +125°C |
| Material | Epoxy resin with ceramic substrate |
| Weight | 0.015 kg (15 grams) |
| Dimensions (L x W x H) | 20 mm x 12 mm x 4 mm |
Compatibility
This EPROM memory is specifically programmed for the ZF BP 230 series transmission, but it is also compatible with several other ZF models that share the same TCU architecture. Verified compatible transmissions include the WG180, WG200, WG210, and WG220 series, provided they utilize the same 28-pin DIP socket layout. For installations involving the HOUSING REAR PART or CASE, always verify the TCU revision number before replacement. The 6073.224.067 is not backward-compatible with older mechanical-only transmissions lacking electronic control modules.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4681101002 | TRANSMISSION HOUSING | Main structural casing for gearset and valve body |
| 4681201007 | HOUS.FRONT SECT | Front section housing for torque converter and pump |
| 4681201008 | HOUSING REAR PART | Rear section housing for output shaft and tail cone |
| 4681298001 | CASE | Complete transmission case assembly |
| 0631306074 | CYLINDRICAL PIN | Alignment pin for housing and valve body |
| 0636100801 | CAP SCREW | Fastener for securing housing sections |
| 4681301015 | FIXING PLATE | Retaining plate for EPROM socket |
| 4681301016 | SCREEN SHEET | Filter screen for hydraulic fluid |
| 4681301017 | SCREEN SHEET | Secondary filter screen for valve body |
| 0636100803 | CAP SCREW | Fastener for TCU mounting bracket |
Frequently Asked Questions
Q: Can I reprogram the ZF 6073.224.067 EPROM myself?
A: No. This EPROM is factory-programmed with proprietary ZF calibration data. Reprogramming requires specialized equipment and access to ZF’s encrypted software files. Replacement with a genuine OEM part is strongly recommended to avoid transmission damage.
Q: How do I know if my BP 230 transmission needs a new EPROM memory?
A: Diagnostic trouble codes (DTCs) such as P0603 (internal control module memory error) or P0700 (transmission control system malfunction) often indicate EPROM failure. Physical inspection may reveal cracked solder joints or corrosion on the chip’s pins.
Q: Is the 6073.224.067 compatible with aftermarket TCU units?
A: Compatibility is limited to OEM ZF TCUs that use a 28-pin DIP socket. Aftermarket or remanufactured TCUs may require a different EPROM version. Always cross-reference your TCU part number before ordering.
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