Lost Communication With Steering Effort Control Module
What does U0179 mean?
The U0179 code means the vehicle's onboard diagnostic system has detected: Lost Communication With Steering Effort Control Module. This is a moderate severity code.
Common Symptoms
- Power steering warning light on
- Steering feels heavy or inconsistent
- Electric power steering assist lost
- Steering effort does not change with speed
- Steering wheel difficult to turn at low speeds
Probable Causes (Ranked by Likelihood)
- Failed electric power steering module Very High
- Damaged wiring to steering assist motor High
- Steering angle sensor communication fault Moderate
- Low battery voltage affecting steering module Low
Step-by-Step Diagnostic Procedure
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Check battery voltage (low voltage commonly causes EPS faults)
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Inspect wiring to the electric power steering motor and module
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Verify the steering angle sensor calibration
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Check CAN bus communication at the steering module
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Scan for related steering angle sensor codes
Frequently Asked Questions
Can I drive with code U0179?
Drive only short distances at low speed. Without power steering assist the vehicle will be very difficult to steer, especially at low speeds and during parking.
What causes U0179?
Most often caused by a failed electric power steering module. Low battery voltage is also a common trigger and should be checked first.
Is U0179 expensive to fix?
Costs range from $300 to $1200. Check the battery first since a weak battery can cause this code. EPS motor or module replacement is the most expensive fix.