Invalid Data Received From Battery Saver Module
The U0493 code means the vehicle's onboard diagnostic system has detected: Invalid Data Received From Battery Saver Module. This is a low severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- easy
- Estimated cost
- $100 - $400 (parts and labor)
Network codes mean modules are not communicating. You need a scanner that reads all systems to find the problem.
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Common Symptoms
- Battery saver mode activating prematurely
- Accessories shutting off too early
- Radio turning off when parked
- Battery saver warning incorrect
Probable Causes (Ranked by Likelihood)
- Battery saver module data error Very High
- 12V battery degradation High
- CAN bus interference Moderate
- Parasitic drain affecting module readings Low
Step-by-Step Diagnostic Procedure
-
Test 12V battery condition
-
Check for parasitic drains
-
Scan battery saver module
-
Reset module settings
Frequently Asked Questions
Can I drive with U0493?
Yes. The battery saver may activate prematurely but driving is unaffected.
What causes U0493?
Usually a degraded 12V battery triggering premature shutoff.
How much to fix?
Typically $100 to $400. Battery replacement often resolves it.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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