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DTC codes / U05xx · Network communication / U058D

U058DInvalid Data Received From Active Grille Air Shutter Module D

U058D is a network communication fault indicating that a control module received invalid or missing data from the Active Grille Air Shutter Module D over the vehicle's Controller Area Network (CAN) bus. The computer detected that the shutter module's broadcast messages were either absent, corrupted, or outside the expected range for a defined period, so it flagged the data as untrustworthy.

SystemNetwork
Code typeGeneric (all makes)
SeverityLow
Fix difficultyIntermediate
AreaNetwork communication

Symptoms you may notice

  • A warning light on the dashboard, often the check engine light or a dedicated grille shutter fault indicator
  • Often no symptoms besides the warning light, with the vehicle driving normally
  • The active grille shutters may remain stuck open or closed, affecting fuel economy and engine warm-up time
  • Possible reduced fuel efficiency or longer warm-up in cold weather due to improper shutter positioning
  • In some vehicles, a message on the driver information center stating that a driver assistance or emissions system is unavailable
  • Rarely, the engine may enter a reduced power or limp mode if the fault is grouped with other communication errors

Common causes, most likely first

  1. A faulty or binding active grille air shutter actuator on bank D, causing the module to send invalid position or status data
  2. Damaged, corroded, or disconnected wiring or connector pins at the shutter module or its harness
  3. A failed active grille air shutter module itself, internal electronics unable to broadcast valid CAN messages
  4. Low battery voltage or a weak charging system causing the module to drop offline intermittently
  5. Water intrusion or debris obstruction in the shutter assembly that forces the module to report out-of-range data
  6. A CAN bus communication fault, such as a shorted or open data line, affecting only the shutter module's messages
  7. Aftermarket accessories or improper previous repairs that disturbed the shutter module's power or ground circuits

How to diagnose and fix it

  1. Perform a visual inspection of the active grille shutter assembly for debris, ice, or physical damage that could bind the flaps
  2. Check battery voltage and charging system output, then clear the code and verify whether it returns immediately
  3. Inspect the shutter module connector and harness for corrosion, loose pins, or chafed wires, and repair as needed
  4. Use a scan tool to command the shutter module through its full range and observe live data for erratic position feedback
  5. Check power and ground at the shutter module connector with a multimeter or test light while wiggling the harness
  6. If communication is still invalid, substitute a known-good shutter module or perform a bidirectional relearn and retest
  7. After repair, clear all codes, perform any required module calibration or initialization, and road-test to confirm the code stays away

What the shutter module data really means

  • A binding shutter flap often sets U058D before any mechanical symptom appears, because the module reports an invalid position even though the flaps look fine from outside.
  • The code can be set by a completely separate module on the same CAN bus that is corrupting or delaying messages, so always check for other communication codes before condemning the shutter module.
  • Low battery voltage during cranking is a common hidden cause, especially in cold weather, because the shutter module may reset and broadcast invalid data on the first few frames.
  • Replacing the shutter module without checking the connector for water intrusion frequently leads to a repeat failure, as the same corroded pins damage the new unit.
  • Some vehicles require a grille shutter calibration or initialization after any module replacement, and skipping that step will immediately reset U058D even with good hardware.

Can I keep driving with U058D?

The vehicle is generally safe to drive because the active grille shutters are an efficiency and warm-up aid, not a safety system, but avoid long periods of idling or heavy load until the fault is repaired. If the warning light is accompanied by reduced power or multiple communication codes, have the vehicle inspected promptly rather than continuing to drive.

Tools that help

Tools we recommend are in the Auto Veteran shop on Amazon. As an Amazon Associate we earn from qualifying purchases.

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.

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