What Does P245C Mean?
The electrical circuit to the EGR cooler bypass valve actuator is reading voltage lower than expected. This indicates a short to ground, poor connection, or actuator internal fault.
Common Causes
40%
Shorted wiring or connector to ground
30%
Failed EGR cooler bypass valve actuator with internal short
20%
Corroded or damaged connector pins
7%
ECM driver circuit failure
3%
Damaged wiring from rubbing or heat
Diagnostic Steps
1
Step 1: Disconnect EGR cooler bypass valve actuator connector and measure resistance to ground
2
Step 2: Check for continuity between actuator connector pins and ground with harness disconnected
3
Step 3: Inspect connector for corrosion, bent pins, or moisture intrusion
4
Step 4: Test actuator motor resistance according to manufacturer specifications
5
Step 5: Check ECM output voltage at harness side with key on, engine off
Estimated Repair Cost
$150 - $700
Parts + labor, varies by vehicle and location
The electrical circuit to the EGR cooler bypass valve actuator is reading voltage lower than expected. This indicates a short to ground, poor connection, or actuator internal fault.
The most common cause of P245C (Exhaust Gas Recirculation Cooler Bypass Control Circuit Low) is: Shorted wiring or connector to ground
Typical repair costs for P245C range from $150 to $700, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to drive short distances but may cause EGR system malfunction and increased emissions. Repair promptly to avoid catalytic converter damage.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P245C to identify the root cause.
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Quick Info
Category
Powertrain
System
Emissions Control System
Difficulty
Type
Generic (SAE)
Recommended Tools
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