C1222 Ford Code - Speed Wheel Mismatch
Quick Answer
The ABS module receives wheel speed readings from each wheel speed sensor and processes this information to determine if an ABS event is necessary. Common causes include Wheels or tires mismatch, Faulty Wheel Speed Sensor, Wheel Speed Sensor harness is open or shorted. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- C1222 Ford indicates Speed Wheel Mismatch.
- Common causes
- Common causes include Wheels or tires mismatch, Faulty Wheel Speed Sensor, Wheel Speed Sensor harness is open or shorted.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code C1222 Ford Description
The active wheel speed sensor generates a signal that is sent to the ABS module. The wheel speed sensor circuitry connects to the ABS module through 2 wires and a connector at each wheel speed sensor. When the ignition is turned to the RUN position, the ABS module carries out a self-test by sending a reference voltage to all of the wheel speed sensors through their circuitry to determine if they are functional.
The ABS module continuously monitors and compares the rotational speed of each wheel and when it detects an impending wheel lock, modulates brake pressure to the appropriate brake caliper. This is accomplished by triggering the hydraulic control unit (HCU) to open and close the appropriate solenoid valves. Once the affected wheel returns to normal speed, the ABS module returns the solenoid valves to their normal position and normal (base) braking resumes.
What are the Possible Causes of the DTC C1222 Ford?
- Wheels or tires mismatch
- Faulty Wheel Speed Sensor
- Wheel Speed Sensor harness is open or shorted
- Wheel Speed Sensor circuit poor electrical connection
How to Fix the DTC C1222 Ford?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C1222 Ford code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about C1222 Ford Code
1. What does OBDII code C1222 mean on a Ford vehicle?
C1222 indicates a "Speed Wheel Mismatch" issue, meaning the wheel speed sensors are detecting inconsistent or mismatched readings from the wheels.
2. What are the common symptoms of code C1222 on a Ford?
Symptoms may include the ABS warning light turning on, reduced ABS functionality, or inconsistent braking performance.
3. What causes code C1222 to appear in a Ford?
Common causes include faulty wheel speed sensors, damaged sensor wiring, wheel alignment issues, or mismatched tire sizes.
4. Can mismatched tires trigger code C1222 in a Ford?
Yes, significant differences in tire size or wear can cause wheel speed mismatches and trigger this code.
5. How do I diagnose code C1222 on my Ford?
Start by using a scan tool to confirm the code, then inspect the wheel speed sensors, wiring, and tires for visible damage or discrepancies.
6. Can a bad wheel speed sensor cause C1222 in a Ford?
Yes, a faulty or dirty wheel speed sensor is a common cause of this code.
7. Is it safe to drive with code C1222 active in my Ford?
While the vehicle may remain drivable, the ABS system may not function correctly, which could affect braking safety in certain conditions.
8. How do I fix code C1222 on a Ford?
Repairs may include cleaning or replacing faulty wheel speed sensors, repairing damaged wiring, or ensuring all tires are of the same size and properly inflated.
9. Can alignment issues cause code C1222 in a Ford?
Yes, improper wheel alignment can lead to wheel speed mismatches and trigger this code.
10. Do I need to clear the code after fixing the issue?
Yes, after making repairs, use a scan tool to clear the code and verify that it doesn’t return.
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