C1248
ABS Outlet Valve Coil RR Circuit Short To Battery
Chassis Chassis/Safety ABS Valve Control 🔴 Serious — Stop or limit driving
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What This Actually Means
In plain language — no jargon

The rear-right ABS valve coil is receiving too much electrical power, like a short circuit sending full battery voltage directly to it. This prevents the valve from functioning properly and disables ABS braking control.

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Symptoms You May Notice
3 known symptoms for this code
ABS warning light illuminated on dashboard
Loss of ABS functionality; brakes lock up under hard braking
Possible grinding or pulsing sensation in brake pedal
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Embedded Systems Insight
What the ECU/ECM is actually computing

The ECU monitors the resistance and voltage across the RR ABS outlet valve coil circuit. It expects a specific voltage drop when the solenoid is energized. When voltage stays at or near battery level instead of dropping as expected, the ECU detects a short-to-battery condition and sets the fault code.

Voltage & Parameter Thresholds

Parameter Normal Range Fault Condition
Coil Voltage 0-12V with normal resistance drop Sustained battery voltage without expected resistance
Circuit Resistance 4-8 ohms per coil specification Near-zero ohms indicating direct short
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Diagnostic & DIY Fix Guide
Check these in order — from cheapest to most complex
1
ABS wiring harness connector
Inspect and reseat the RR ABS valve connector; corrosion or loose pins often cause false short signals.
2
ABS outlet valve solenoid coil (RR)
Test coil resistance with multimeter; replace if reading is below 1 ohm or open circuit.
3
ABS module wiring and relay
Check for pinched, melted, or damaged wiring between the ABS module and RR valve; repair or replace damaged sections.