What Does P2515 Mean?
The PCM has detected a problem with the secondary A/C refrigerant pressure sensor circuit. This sensor monitors refrigerant pressure and is used for A/C system protection and performance optimization.
Common Causes
45%
Faulty A/C refrigerant pressure sensor 'B' internal failure
25%
Damaged wiring or connectors in sensor circuit
15%
Corrosion or moisture in sensor connector terminals
10%
Actual A/C system pressure issue causing out-of-range readings
5%
PCM internal fault in pressure sensor monitoring circuit
Diagnostic Steps
1
Step 1: Locate A/C pressure sensor 'B' (typically on high or low side line, consult wiring diagram)
2
Step 2: Inspect sensor connector for corrosion, damage, or moisture intrusion
3
Step 3: Measure sensor voltage output at connector and compare to specification (typically 0.5-4.5V)
4
Step 4: Test sensor by applying pressure or comparing reading to known-good pressure gauge
5
Step 5: Check A/C system refrigerant charge level and pressures if sensor tests good
Estimated Repair Cost
$120 - $450
Parts + labor, varies by vehicle and location
The PCM has detected a problem with the secondary A/C refrigerant pressure sensor circuit. This sensor monitors refrigerant pressure and is used for A/C system protection and performance optimization.
The most common cause of P2515 (A/C Refrigerant Pressure Sensor "B" Circuit) is: Faulty A/C refrigerant pressure sensor 'B' internal failure
Typical repair costs for P2515 range from $120 to $450, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Does not affect vehicle safety or drivability. A/C system may not function properly or may operate in default mode with reduced performance.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2515 to identify the root cause.
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Quick Info
Category
Powertrain
System
Air Conditioning System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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