B1670

Code

Other B — Body

Mirror Passenger Right/Left Motor Stalled

Brand: Other

Type: B — Body

Views: UK: 29 EN: 59 RU: 30

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Page language: EN

Causes

Mechanical obstruction in mirror housing (ice, debris, broken gears)
Seized or worn mirror motor (brushes, bearings)
Damaged or pinched wiring harness or connector corrosion
Faulty mirror switch or multiplexed control module
Short circuit or high resistance in power/ground circuit
Blown fuse or faulty relay protecting the mirror motor

Symptoms

Passenger mirror will not adjust or moves intermittently
Grinding, clicking or buzzing noise from mirror when attempting adjustment
Mirror stops moving partway and will not complete travel
Blown fuse or tripped circuit protecting the mirror
Possible dashboard message or body module fault logged

What to check

Read and record freeze frame and related codes with a scan tool; clear codes and attempt to re-run the fault
Visually inspect mirror housing for obvious damage, debris, or ice
Operate mirror switch while observing mirror for movement and listening for motor noise
Inspect connector and wiring for corrosion, pinching, or broken wires
Check associated fuse and relay for the mirror circuit
Measure voltage at the mirror motor connector while operating the switch

Signal parameters

Nominal supply voltage to motor: ~11–14 V when operating
Motor stall current will be higher than running current; expected running current often 0.5–6 A depending on design (manufacturer-specific)
Motor winding resistance: typically low ohms (manufacturer-specific); open or very high resistance indicates an open winding
Connector pin-to-pin continuity and good ground (

Diagnostic algorithm

Retrieve freeze-frame and all related B- and U-codes. Note whether code refers to right or left passenger mirror.
Visually inspect the mirror assembly and surrounding area for ice, debris, or physical damage. Manually move the mirror (if possible) to check for binding.
Check fuse(s) and relay(s) for the mirror circuit; replace if blown and inspect for recurring blow.
With ignition ON, operate the mirror switch and observe: listen for motor noise, note whether the mirror attempts to move and whether the code reappears.
Backprobe the motor connector while operating: verify battery voltage reaches the motor and that grounds switch polarity as expected. If no voltage, trace back to switch/module.
Measure motor current during operation. Excessive current or zero current indicates stall or open circuit respectively—investigate wiring, short, or motor failure.
With ignition OFF and battery disconnected for safety, disconnect mirror from vehicle harness and measure motor winding resistance and continuity to ground.
If safe and instructed by repair info, apply 12 V directly to motor (bench test) to confirm mechanical/electrical function—exercise caution to avoid damage or shorting. If motor fails to run or sounds rough, replace motor/actuator assembly.
Inspect and repair any damaged wiring, connectors, or grounding points. Repair or replace the mirror switch or body control module if upstream control signals are absent or incorrect.
After repair, clear codes, re-test mirror operation through full travel, and confirm no recurrence of B1670.