What Does P1283 Mean?
An electrical fault has been detected in the control circuit for the air-assisted fuel injection system solenoid on Bank 1. Some engines use compressed air to improve fuel atomization.
Common Causes
40%
Faulty air injection solenoid valve
30%
Damaged wiring or connector to solenoid
20%
Short to ground or open circuit in wiring
10%
ECM internal driver circuit failure
Diagnostic Steps
1
Step 1: Locate and inspect air injection solenoid connector for damage or corrosion
2
Step 2: Measure resistance of solenoid coil (check manufacturer specifications)
3
Step 3: Check for voltage supply to solenoid with key on
4
Step 4: Test solenoid operation by commanding it on/off with scan tool
5
Step 5: Verify wiring continuity and check for shorts to ground or power
Estimated Repair Cost
$150 - $500
Parts + labor, varies by vehicle and location
An electrical fault has been detected in the control circuit for the air-assisted fuel injection system solenoid on Bank 1. Some engines use compressed air to improve fuel atomization.
The most common cause of P1283 (Switching Solenoid for Air Assisted Injection Valves Bank 1 Control Circuit Electrical) is: Faulty air injection solenoid valve
Typical repair costs for P1283 range from $150 to $500, depending on the vehicle, location, and whether you do it yourself or go to a shop.
May cause rough running, increased emissions, or reduced power. Safe to drive but repair soon.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P1283 to identify the root cause.
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Quick Info
Category
Powertrain
System
Fuel System / Air Injection System
Difficulty
Type
Manufacturer
Recommended Tools
OBD2 Scanner
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