U0259

Lost Communication With Special Purpose Vehicle Control Module A

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–167 (est.)

Symptoms

Inoperability of related systems (for example, additional lighting)
The Check Engine light comes on
Malfunctions of other electronic systems
Additional fault codes appear

Causes

Open or short circuit in the communication circuit
Damaged or oxidized connector pins
Control module malfunction
Module power problems
Software errors in ECU

How to Fix

Check the integrity of the wiring and the condition of the connectors
Check fuses and module power supply
Scan the module for additional errors
If necessary, replace the control module
Update ECU software

Related codes

U0260 U0258 U0261