B1467
Wiper Hi/Low Speed Circuit Motor Short To Battery
Body Chassis/Safety Wiper system electrical 🟢 Low — Fix at next service
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What This Actually Means
In plain language — no jargon

The wiper motor circuit is shorted directly to battery power, causing the motor to receive too much voltage. It's like a light switch that's stuck in the ON position with full power constantly flowing through.

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Symptoms You May Notice
3 known symptoms for this code
Wipers stay on continuously or operate at high speed only
Wipers do not respond to speed control settings
Burning smell or smoke from wiper motor area
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Embedded Systems Insight
What the ECU/ECM is actually computing

The ECU monitors voltage and current draw on the wiper motor circuit. When the circuit shorts to battery voltage, the ECU detects abnormally high voltage (near 12-14V continuously) and excessive current draw that doesn't match commanded speed levels. The fault triggers when measured voltage exceeds normal operational thresholds.

Voltage & Parameter Thresholds

Parameter Normal Range Fault Condition
Motor circuit voltage 0-5V variable per speed command >10V sustained without command
Current draw 2-8A depending on speed >12A continuous draw
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Diagnostic & DIY Fix Guide
Check these in order — from cheapest to most complex
1
Wiper motor relay
Inspect and replace the relay as it may be stuck closed, causing the short-to-battery condition.
2
Wiper motor connector/wiring
Check for damaged insulation, pinched wires, or corrosion at the motor connector that could cause contact with battery voltage.
3
Wiper motor assembly
Replace the motor if internal windings are shorted or internal switch contacts are fused closed.