📖 What Does C1938 Mean?
Symptoms
- • ABS warning light on
- • traction control light on
- • vehicle may vibrate or pull to one side while braking
- • reduced braking performance
Common Causes
- • Faulty wheel speed sensor
- • faulty wheel speed sensor wiring
- • faulty ABS module
- • faulty brake controller
Possible Solutions
1. Check wheel speed sensor wiring for damage or corrosion, repair or replace as needed. 2. Check wheel speed sensor for proper installation and securement, reposition or replace as needed. 3. Check ABS module for proper function, replace if faulty. 4. Check brake controller for proper function, replace if faulty.
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❓ Common Questions About C1938
Can I drive with code C1938?
You can drive for a short time, but should address code C1938 soon to avoid worsening the problem or failing an emissions test.
How much does it cost to fix C1938?
The estimated repair cost for code C1938 is between $100 and $500. This includes parts and labor for most makes and models.
Is this code easy to fix myself?
This repair is considered moderate. It may require specialized tools or significant disassembly. Professional help is recommended if you aren't an experienced DIYer.
Required Parts
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View Best Sellers ↗Related Diagnostic Codes
Other codes that may appear with C1938
C1936: Electronic Stability Control (ESC) Malfunction
C1937: Traction Control System Malfunction
C1939: ABS System Malfunction
C1940: Brake System Pressure Sensor Circuit Malfunction
💡 Why These Codes Are Related:
- • Similar Issues: Same root cause or component failure
- • Related Problems: Often occur together due to system interactions
- • Sequential Codes: Progressive failure stages or multiple sensors
- • Same System: Components within the same automotive system