OBD-II Chassis Error Code C1338: How to Fix It

Q: Can I drive with error code C1338?

It's not recommended to drive with C1338 as it indicates a parking brake system failure. The parking brake may not engage properly, creating a safety risk especially when parking on inclines.

Q: How much does it cost to fix C1338 EPB motor relay fault?

DIY repair costs $15-50 for a relay and fuses. Professional repair ranges from $150-400 depending on the root cause. EPB motor replacement can cost $500-1200 if that component has failed.

Q: What causes EPB motor relay to fail?

Common causes include electrical overload from a failing EPB motor, corrosion from moisture exposure, normal wear after high mileage, or voltage spikes in the electrical system.

Q: Will C1338 cause my car to fail inspection?

Yes, most states require a functioning parking brake system to pass safety inspection. The C1338 code indicates a safety-critical system failure that must be repaired.

Q: How do I manually release the parking brake if it's stuck?

Most vehicles have an emergency release procedure involving a specific sequence of brake pedal presses and EPB switch actions. Consult your owner's manual for the exact procedure as it varies by manufacturer.

Abstract

OBD-II error code C1338 indicates a fault with the Electronic Parking Brake (EPB) motor relay, which controls the electric parking brake system. This error prevents the parking brake from engaging or disengaging properly, creating a serious safety concern that requires immediate attention.