What Does P1522 Mean?
The PCM has received an invalid or out-of-range crash signal from the airbag control unit via the vehicle's communication network. This indicates a communication problem between safety systems and powertrain control.
Safety Warning
This indicates a communication fault between critical safety systems. Airbag system function may be compromised. Vehicle should be diagnosed and repaired immediately as airbags may not deploy properly in a crash.
Common Causes
30%
Faulty airbag control module sending incorrect data
25%
Damaged CAN bus wiring between airbag and powertrain modules
20%
Poor ground connection affecting module communication
15%
Voltage supply issue to airbag control module
10%
PCM software glitch or corruption requiring reprogramming
Diagnostic Steps
1
Step 1: Check for active airbag/SRS codes in airbag control module using scan tool
2
Step 2: Verify communication between all modules on CAN bus network
3
Step 3: Inspect CAN bus wiring and connectors between airbag module and PCM for damage
4
Step 4: Check battery voltage and airbag module power supply and ground circuits
5
Step 5: Clear codes and test drive; if code returns immediately, suspect airbag module or PCM software
Estimated Repair Cost
$200 - $1,200
Parts + labor, varies by vehicle and location
The PCM has received an invalid or out-of-range crash signal from the airbag control unit via the vehicle's communication network. This indicates a communication problem between safety systems and powertrain control.
The most common cause of P1522 (Variable Intake Solenoid #2 Circuit Malfunction) is: Faulty airbag control module sending incorrect data
Typical repair costs for P1522 range from $200 to $1,200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
This indicates a communication fault between critical safety systems. Airbag system function may be compromised. Vehicle should be diagnosed and repaired immediately as airbags may not deploy properly in a crash.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P1522 to identify the root cause.
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Quick Info
Category
Powertrain
System
Safety Systems/Module Communication
Difficulty
Type
Manufacturer
Recommended Tools
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