What Does U1085 Mean?
Duplicate or related fault indicating the SCP network is experiencing invalid or missing powertrain status request data. This often appears alongside U1084 and indicates persistent communication problems.
Common Causes
35%
Intermittent network bus short circuit or open circuit condition
25%
Multiple modules on network experiencing power supply issues
20%
Damaged network bus at splice point or junction connector
15%
Failed module continuously flooding network with invalid requests
5%
Water intrusion or corrosion affecting multiple network connection points
Diagnostic Steps
1
Step 1: Check for common power supply issues - test all network module power and ground circuits
2
Step 2: Wiggle test all network harness connectors while monitoring for code setting to isolate intermittent faults
3
Step 3: Disconnect modules one at a time to identify if a failed module is corrupting the network
4
Step 4: Inspect for water damage in footwells, under seats, and behind kick panels where network junctions often locate
5
Step 5: Perform network bus resistance test - should measure approximately 60-120 ohms across bus terminals
Estimated Repair Cost
$150 - $1,400
Parts + labor, varies by vehicle and location
Duplicate or related fault indicating the SCP network is experiencing invalid or missing powertrain status request data. This often appears alongside U1084 and indicates persistent communication problems.
The most common cause of U1085 (SCP (J1850) Invalid or Missing Data for Powertrain Status Request) is: Intermittent network bus short circuit or open circuit condition
Typical repair costs for U1085 range from $150 to $1,400, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Can cause multiple system malfunctions including transmission, cruise control, and instrument operation. Generally safe for short-term operation but requires prompt attention.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U1085 to identify the root cause.
OBDHut Mobile App
Scan codes directly from your car with the OBDHut app.
Coming Soon
Quick Info
Category
Network
System
Network Communication - Powertrain Status
Difficulty
Type
Manufacturer
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
