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 MANUALSFORD2009RANGER 2D PICKUP, 2.3 D, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSDTC INDEXMODULE COMMUNICATIONS NETWORK DTCS
2009 Ford Ranger 2D Pickup, 2.3 D, Automatic
Module Communications Network DTCS
2009 Ford Ranger 2D Pickup, 2.3 D, AutomaticSECTION Module Communications Network DTCS
COMMUNICATION NETWORK DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Source | Action |
|---|---|---|---|
| U0002 | High Speed CAN Communication Bus Performance | Instrument Cluster (IC) | Go To PINPOINT TEST H . |
| U0100 | Lost Communication With ECM/PCM | Smart Junction Box (SJB) | The fault is not currently present. CLEAR the DTC. REPEAT the network test with the scan tool. FOLLOW the appropriate pinpoint test for the module which fails the network test. |
| U0100 | Lost Communication With ECM /PCM | 4X4 control module | The fault is not currently present. CLEAR the DTC. REPEAT the network test with the scan tool. FOLLOW the appropriate pinpoint test for the module which fails the network test. |
| U0102 | Lost Communication With Transfer Case Control Module (4X4CM) | IC | Go To PINPOINT TEST F . |
| U0140 | Lost Communication With Body Control Module (GEM ) | IC | Go To PINPOINT TEST D . |
| U0151 | Lost Communication With Restraints Control Module | IC | Go To PINPOINT TEST C . |
| U0155 | Lost Communication With Instrument Panel Cluster (IC ) Control Module | SJB | REFER to EXTERIOR LIGHTING , Daytime Running Lamps (DRL). |
| U0294 | Lost Communication With Powertrain Control Module | IC | Go To PINPOINT TEST A . |
| U1900 | CAN Communication Bus Fault - Receive Error | Occupant Classification System Module (OCSM) | GO to SYMPTOM CHART for module that failed network test. |
| U1900 | CAN Communication Bus Fault - Receive Error | Restraints Control Module (RCM) | 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 . |
| U2023 | Fault Received From External Node | IC | RETRIEVE and FOLLOW non-network DTCs from other modules. REFER to MULTIFUNCTION ELECTRONIC MODULES . |
| U2472 | Unexpected Ignition State | IC | REFER to INSTRUMENTATION AND WARNING CHIMES . |
| U2510 | CAN - Invalid Data For Vehicle Security | IC | REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) . |
| U2511 | CAN - Data Mis-Match (Receive Data Does Not Match Expected) | IC | REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) . |
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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.