Bendix EC-60 UDS 144 / SPN 614 FMI 3 — i/o 2 or i/o 3 shorted high or Stop Lamp Output Error

Code Details

Plain-English Meaning

The EC-60 detected a shorted-high condition on an I/O output circuit — an output that should be low or switched is reading high (battery voltage) when it should not be. This type of fault can affect lamp outputs, relay drivers, or auxiliary control circuits.

The Bendix EC-60 table maps UDS code 144, blink code 12-23, J1587 154-03, and J1939 SPN 614 FMI 3 to this ABS/ATC/ESP diagnostic entry. The Bendix source indicates an ABS and/or ATC/ESP warning lamp can be on for this entry. The EC-60 continuously monitors wheel speed sensor circuits, pressure modulation valve output drivers, supply voltage quality, J1939 network data from the engine and transmission controllers, and internal self-diagnostic routines. When any monitored value falls outside its acceptable range — or a circuit does not respond as the module expects — the EC-60 logs a diagnostic trouble code and may disable the affected ABS, ATC, or ESP function. Bendix ACOM Pro or a compatible diagnostic interface is the required tool for reading live sensor data, running actuator tests, performing calibrations, clearing latched codes, and adjusting EC-60 configuration parameters. Generic J1939 scan tools can read the SPN/FMI but cannot access EC-60-specific live data screens or configuration settings.

Common Symptoms

• ATC/ESP lamp on
• Affected output (lamp or relay) may be stuck on or behaving unexpectedly
• ABS typically continues to operate normally
• Scan tool shows Bendix EC-60 UDS 144 / SPN 614 FMI 3

Possible Causes

Possible causes may include the items below. The list is not a parts diagnosis.

• Output circuit wire contacting battery voltage in the harness bundle
• Aftermarket wiring tapped into the EC-60 output circuit and creating a backfeed
• EC-60 internal output driver fault
• Damaged connector or connector backshell allowing moisture bridging to a voltage source

First Checks

• Unplug the EC-60 output connector for the affected circuit and measure voltage at the external wire — if voltage is still present, the short is in the harness, not the EC-60.
• Trace the output wire for contact with ignition-switched or battery-powered wires in the same harness bundle.
• Check for any aftermarket accessories wired to the EC-60 output circuit.
• Inspect the connector backshell and seals for moisture intrusion.
• After correcting the short, clear with Bendix ACOM and verify the output behaves correctly.

Can I Keep Driving?

ABS, ATC, and ESP brake-system codes should be handled conservatively. Normal base braking continues when ABS or stability functions are disabled, but the safety benefit of anti-lock and stability intervention is not available. If a brake warning lamp, red stop indicator, loss of braking performance, steering concern, or uncharacteristic vehicle behavior appears alongside this code, stop safely and follow OEM or fleet guidance before continuing.

Related Lookup Pages

• FMI 3 explanation
• Bendix manufacturer hub
• ABS / ATC / ESP fault codes
• ABS Light symptom page
• Brake Warning Light symptom page
• Search this code