What Does U1308 Mean?
The receiving module is not getting valid engine torque data over the SCP (J1850) network from the powertrain control module. This prevents proper coordination of systems that depend on engine torque information.
Common Causes
35%
Communication bus fault preventing message transmission from PCM to other modules
30%
Powertrain Control Module fault preventing it from broadcasting torque data
20%
Poor or corroded connection at PCM connector affecting communication signal quality
15%
Receiving module (ABS, traction control, transmission) unable to interpret torque messages
Diagnostic Steps
1
Step 1: Verify PCM is communicating on the network and check for other U-codes indicating broader network issues
2
Step 2: Monitor live data stream to confirm PCM is calculating and displaying engine torque values internally
3
Step 3: Inspect and clean PCM connector terminals, checking for corrosion or bent pins
4
Step 4: Use enhanced scan tool functions to monitor network traffic and verify torque data is being broadcast
5
Step 5: Check for PCM software updates or TSBs addressing torque data communication issues
Estimated Repair Cost
$100 - $1,200
Parts + labor, varies by vehicle and location
The receiving module is not getting valid engine torque data over the SCP (J1850) network from the powertrain control module. This prevents proper coordination of systems that depend on engine torque information.
The most common cause of U1308 (SCP (J1850) Invalid or Missing Data for Function Read Engine Torque) is: Communication bus fault preventing message transmission from PCM to other modules
Typical repair costs for U1308 range from $100 to $1,200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Loss of torque data may affect traction control, stability control, and transmission shift quality. Vehicle may experience reduced performance or drivability issues.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U1308 to identify the root cause.
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Quick Info
Category
Network
System
Network Communications / Powertrain
Difficulty
Type
Manufacturer
Recommended Tools
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