What Does P245A Mean?
The electrical circuit controlling the EGR cooler bypass valve has an open circuit or control fault. The ECM cannot properly regulate exhaust gas cooling, affecting emissions and engine performance.
Common Causes
35%
Damaged or corroded wiring/connector to EGR cooler bypass valve
30%
Failed EGR cooler bypass control solenoid or actuator
20%
Open circuit in control wire (broken conductor)
10%
Failed EGR cooler bypass valve (mechanical seizure or coil failure)
5%
PCM/ECM driver circuit failure
Diagnostic Steps
1
Step 1: Locate and inspect EGR cooler bypass valve/solenoid connector for damage or corrosion
2
Step 2: Disconnect valve and measure resistance across solenoid coil; compare to specifications (typically 10-50 ohms)
3
Step 3: Check for battery voltage at solenoid harness connector during commanded operation with KOEO
4
Step 4: Test continuity of control wires from PCM to valve; check for opens or high resistance
5
Step 5: Command valve operation with scan tool and listen/feel for valve actuation; verify mechanical movement
Estimated Repair Cost
$200 - $800
Parts + labor, varies by vehicle and location
The electrical circuit controlling the EGR cooler bypass valve has an open circuit or control fault. The ECM cannot properly regulate exhaust gas cooling, affecting emissions and engine performance.
The most common cause of P245A (Exhaust Gas Recirculation Cooler Bypass Control Circuit/Open) is: Damaged or corroded wiring/connector to EGR cooler bypass valve
Typical repair costs for P245A range from $200 to $800, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle is safe to drive but may experience reduced performance and increased emissions. EGR system may not function properly affecting engine temperatures.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P245A to identify the root cause.
OBDHut Mobile App
Scan codes directly from your car with the OBDHut app.
Coming Soon
Quick Info
Category
Powertrain
System
Emissions Control System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
