C0153 moderate

Electronic Power Steering Control Module Voltage Low

The C0153 code means the vehicle's onboard diagnostic system has detected: Electronic Power Steering Control Module Voltage Low. This is a moderate severity code.

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Keep driving?: Short distances only
DIY difficulty: moderate
Estimated cost: $50 - $500 (parts and labor)

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Common Symptoms

EPS warning light on
Intermittent power steering loss
Steering heavier during engine start
Multiple electrical system warnings
Battery or charging system warning

Probable Causes (Ranked by Likelihood)

Weak or failing vehicle battery Very High
Faulty alternator not providing sufficient voltage High
Corroded battery cables or terminals Moderate
High resistance in EPS power supply circuit Low

Step-by-Step Diagnostic Procedure

Test battery voltage and perform load test
Check alternator output voltage
Inspect battery terminals and cables for corrosion
Measure voltage at EPS module connector
Check for excessive parasitic battery drain

Frequently Asked Questions

Why does low voltage affect power steering?

Electric power steering motors require significant electrical current to operate. When system voltage drops, the EPS module may not have enough power to drive the motor, resulting in reduced or no assist.

Can a bad battery cause steering issues?

Yes. A weak battery can cause voltage drops when the EPS motor draws high current during parking maneuvers, leading to momentary steering assist loss.

Will fixing the battery resolve this code?

If the code was caused by low voltage from a weak battery or charging system, fixing the root cause should resolve the EPS code. Clear the code and monitor for recurrence.