C062A

Code

Generic C — Chassis

Variable Effort Steering Module Temperature Too High

Brand: Generic

Type: C — Chassis

Views: UK: 26 EN: 32 RU: 25

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Page language: EN

High ambient or under-hood temperature (hot climate, long hill climb)
Excessive motor current due to binding steering, worn components, or misalignment
Faulty temperature sensor in the steering/EPS module
Internal module overheating due to internal fault or failed cooling fan (if equipped)
Poor electrical connections or low battery/charging voltage increasing module stress
Water intrusion or corrosion in connectors causing incorrect temperature readings

Steering feels heavier or inconsistent assist (variable effort not functioning correctly)
Steering warning lamp or EPS malfunction indicator illuminated
Diagnostic trouble code C062A stored and possibly freeze-frame data logged
Reduced or no electric assist (limp mode) during/after fault
Unusual heat felt at steering column or near module mounting area

Retrieve and record all stored codes and freeze-frame data with scan tool
Check live data: steering module temperature, motor current, module supply voltage, and error counters
Perform a visual inspection of module and wiring harness for damage, corrosion, heat exposure, or water ingress
Check connector pins for corrosion, bent pins, or poor mating; reseat connectors
Confirm battery voltage and charging system are within spec while operating the steering system
Check for mechanical binding: test steering range, inspect tie rods, racks, bushings, and wheel alignment

Steering module internal temperature (live value) — should track ambient and rise with heavy use; flagged when above module threshold
Steering motor current/torque draw — elevated current during normal conditions indicates binding or motor issue
Module supply voltage (ignition on and during operation) — stable battery/charging voltage required
CAN communication status/uptime — loss of messages can cause faults
Motor duty cycle or PWM command to motor — compare commanded vs actual response

Connect a capable scan tool. Read and record DTCs, freeze-frame, and live data for module temperature, motor current, and supply voltage.
Attempt to reproduce the condition safely (low speed turn while stationary or slow drive) and watch live temperature/current behavior. Note if temperature rises rapidly with normal use.
Visually inspect module, mounting, and harness for heat damage, water, corrosion, or chafing. Repair any obvious wiring damage.
Check and confirm proper battery and charging system voltage under load. Repair charging/battery issues prior to further diagnostics.
Inspect steering system for mechanical resistance: check tie rods, rack, bushings, wheel bearings, and power steering column for binding. Correct mechanical faults and retest.
Test connector continuity and grounds for the module. Wiggle test harness while watching live data for jumps or dropouts.
If equipped, verify any module internal cooling (fan or vent) operation. Replace/repair if failed.
If sensor values look implausible (e.g., temperature jumps to extremely high value instantly), test the temperature sensor circuit for short/open and correct wiring faults. Replace sensor/module as needed.
Check for available software updates or technical service bulletins for steering module temperature logic. Reprogram module if manufacturer advises.
After repairs, clear codes and perform a full drive cycle under conditions similar to when fault occurred. Recheck for recurrence before declaring repair complete.

Steering motor drawing excessive current because of mechanical binding or alignment problem
Failed or inaccurate internal temperature sensor
Intermittent/poor power supply or ground to the EPS/module
Connector corrosion or water ingress at the module