U2016: NGV Module Signal Short to Ground
Code U2016 indicates a short-to-ground fault in the communication signal line of the Natural Gas Vehicle (NGV) module. This Ford-specific code points to a failure in the data link between the NGV control module and other modules on the vehicle's network, which may use CAN or LIN protocols rather than Ford's traditional SCP. The NGV module detects that its communication line is permanently grounded, preventing proper data transmission.
1. Commonly Affected Makes
2. Most Common Causes
- Damaged communication bus wiring with a short to ground
- Corroded or moisture-contaminated NGV module connector
- Internally damaged NGV module with communication circuit failure
- Fault in another network module causing communication line collapse
- Incorrect previous repair or modification to the wiring harness
3. Symptoms You Will Notice
- Check Engine Light or Service Engine Soon light illuminated
- Reduced engine performance or abnormal operation in natural gas mode
4. Step-by-Step Diagnosis
Scan for all stored codes and freeze frame data
Visually inspect NGV module connector and wiring for damage, corrosion, or shorts
Test communication bus wiring for continuity and shorts to ground using a multimeter
Check for technical service bulletins (TSBs) related to U2016 for the specific vehicle
If wiring is intact, attempt to communicate with the NGV module via scan tool; if no response, suspect module failure
5. Frequently Asked Questions
Is it safe to drive?▼
The vehicle may still operate, but performance could be affected. It is advisable to have the issue diagnosed promptly to avoid potential drivability problems or further damage.
How much does it cost to fix?▼
Repair costs vary widely depending on the root cause. Wiring repairs may cost $100-$300, while NGV module replacement can range from $500 to $1,200 including labor.