OBD Guide
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U1084

Invalid Or Missing Data For Powertrain Status Request

U1084 is an OBD-II diagnostic trouble code meaning: Invalid Or Missing Data For Powertrain Status Request. Common causes: broken or damaged can bus wires, corrosion of electronic module connectors. Estimated repair cost: $17–167.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–167 (est.)

Symptoms

  • Check Engine light comes on
  • Unstable engine operation
  • Power Loss
  • Problems with gear shifting (for automatic transmission)
  • Errors in other vehicle systems

Causes

  • Broken or damaged CAN bus wires
  • Corrosion of electronic module connectors
  • Malfunction of one of the control modules (ECM, TCM, BCM)
  • Problems with module power supply
  • Software glitches

How to Fix

  1. Check the integrity of the CAN bus and connectors
  2. Scan all modules for errors
  3. Check power and ground of all connected modules
  4. Update module software
  5. Replace the faulty module if necessary

Related codes

U1000U0100U0121

FAQ

What does the U1084 code mean?

U1084 is an OBD-II diagnostic trouble code that indicates: Invalid Or Missing Data For Powertrain Status Request

What causes a U1084 error code?

The most common causes of U1084 include: Broken or damaged CAN bus wires; Corrosion of electronic module connectors; Malfunction of one of the control modules (ECM, TCM, BCM); Problems with module power supply.

How do I fix a U1084 diagnostic trouble code?

To fix U1084: Check the integrity of the CAN bus and connectors. Scan all modules for errors. Check power and ground of all connected modules. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U1084?

Yes, but get it checked soon

How much does it cost to fix U1084?

The estimated repair cost for U1084 is $17–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat