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2014 Kia Optima Hybrid EX – Brake Accumulator Codes C1234 and C1236

Aug 16
1 min read

CUSTOMER CONCERN

Brake system stores high-pressure accumulator DTCs C1234 and C1236.

CAUSE

No hydraulic leak or trapped air was found, confirming an internal failure of the Hydraulic Power Unit.

CORRECTION

Remove and replace the Hydraulic Power Unit, bleed the brake hydraulic system, perform brake-pedal travel and pressure-sensor calibrations, clear DTCs C1234 and C1236, and verify normal brake operation.

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2014 Kia Optima Hybrid EX – Brake Accumulator Codes C1234 and C1236

CUSTOMER CONCERN

CAUSE

CORRECTION

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