Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD2007RANGER 2D PICKUP, 3.0 U, RWD, AUTOMATICREPAIR AND DIAGNOSISQUICK LOOKUPSDTC INDEXMODULE COMMUNICATIONS NETWORK DTCS
2007 Ford Ranger 2D Pickup, 3.0 U, RWD, Automatic
Module Communications Network DTCS
2007 Ford Ranger 2D Pickup, 3.0 U, RWD, AutomaticSECTION Module Communications Network DTCS
COMMUNICATION NETWORK DIAGNOSTIC TROUBLE CODES (DTC) LIST
| DTC | Description | Source | Perform Test |
|---|---|---|---|
| U0002 | High Speed CAN Communication Bus Performance | Instrument cluster | Go to Pinpoint Test E . |
| U0100 | Lost Communication With ECM/PCM 4WD Module | Smart junction box (SJB) | CLEAR the DTC. REPEAT the network test with the scan tool. FOLLOW the appropriate pinpoint test for the module which fails the network test. |
| U1900 | CAN Communication Bus Fault - Receive Error | Occupant classification sensor module | Go to Symptom Chart for module that failed network test. |
| U1900 | CAN Communication Bus Fault - Receive Error | RCM | Go to Symptom Chart for module that failed network test. |
| U1900 | CAN Communication Bus Fault - Receive Error | SJB | Go to Symptom Chart for module that failed network test. |
| U2023 | Fault Received From External Node | SJB | RETRIEVE and FOLLOW non-network DTCs from other modules. REFER to MULTIFUNCTION ELECTRONIC MODULES article. |
| U2023 | Fault Received From External Node | Instrument cluster | RETRIEVE and FOLLOW non-network DTCs from other modules. REFER to MULTIFUNCTION ELECTRONIC MODULES article. |
| U2023 | Fault Received From External Node | 4WD control module | RETRIEVE and FOLLOW non-network DTCs from other modules. REFER to MULTIFUNCTION ELECTRONIC MODULES article. |
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.