B1267

Code

FIAT B — Body

Right air intake servo circuit

Brand: FIAT

Type: B — Body

Views: UK: 8 EN: 13 RU: 23

AI status

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Page language: EN

Causes

Blown fuse or power supply fault to HVAC/actuator
Open, short to ground or short to battery in actuator wiring
Poor or corroded connector at actuator or control module
Failed right intake/recirculation servo (actuator motor or internal electronics)
Faulty body control module / HVAC control module or incorrect module software
Mechanical binding or obstruction of the intake door preventing movement

Symptoms

Inability to select fresh/recirculated air for right/dual-zone side
HVAC does not change intake mode or stuck in one position
Audible clicking, grinding or no sound from right intake actuator
DTC B1267 stored; possibly accompanied by other HVAC/servo codes
Uneven temperature or airflow between driver and passenger sides (if dual)

What to check

Scan for codes and note related HVAC DTCs; record freeze frame if available
Verify related fuses and relays for HVAC/actuator power
Visually inspect actuator connector and harness for corrosion, pin damage, or chafing
Listen for actuator movement when changing intake/recirculation settings
Manually move intake door (if accessible) to check for mechanical binding
Check for water intrusion or debris near actuator and wiring

Signal parameters

Supply voltage: battery ~11.5–14.5 V present at actuator power pin when ignition on (verify with service data)
Ground: low resistance to chassis ground (near 0 Ω) on actuator ground circuit
Control signal: usually a PWM or switched control from HVAC/BCM; expected control voltage range 0–5 V or switched 0/12 V depending on design — consult factory data
Position feedback: many actuators provide a feedback voltage of ~0.5–4.5 V proportional to door position (confirm exact range in service manual)
PWM frequency: commonly tens to a few hundred Hz; confirm exact frequency and duty cycle ranges from factory documentation

Diagnostic algorithm

Retrieve and record B1267 and any other HVAC codes. Clear codes and attempt to re-create to confirm persistence.
Verify fuses/relays for HVAC and intake servo. Replace any blown fuses and retest.
With ignition ON, backprobe actuator connector: verify battery voltage at power pin and good ground at ground pin. If no power/ground, trace harness to source (fuse, relay, BCM).
Operate intake/recirculation command while watching voltages. Check for control signal activity (voltage change or PWM). If no control signal, suspect BCM/HVAC control or wiring to module.
Measure feedback/position signal (if present) while commanding actuator. Verify signal changes smoothly across expected voltage range. Erratic or no change indicates actuator fault or wiring.
Inspect connector for corrosion, bent pins, water intrusion. Wiggle harness while monitoring signals to find intermittent faults.
If wiring and connectors check good but actuator does not respond or feedback incorrect, bench-test actuator by applying correct supply/ground (observe safety: do not exceed manufacturer limits). Replace actuator if it fails bench test.
If actuator bench-tests OK but no command from module, consult wiring diagrams and test continuity between module and actuator. Repair wiring/connector faults.
After repair or replacement, clear codes and perform full function test of HVAC intake/recirculation. Road-test or cycle HVAC to confirm no recurrence.
If all wiring and actuator verify OK and symptom persists, consider module diagnosis/reprogramming at dealer-level with factory tools.

Likely causes

Damaged connector or wiring (open/short/high resistance) to the right intake servo
Failed right air intake servo (actuator motor or internal position sensor)
Blown fuse or missing power/ground to the actuator circuit
Intermittent connector/corrosion causing loss of signal

Fault status

⚠️ Status

The HVAC/control module has detected an electrical fault in the right air intake servo circuit (open, short, high resistance or intermittent). This can prevent proper control of intake/recirculation and may require inspection of fuse, wiring, connector, actuator and module.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5-2.0 hours

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