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AutoCodes - Generic - P245B

P245B Code - Exhaust Gas Recirculation Cooler Bypass Control Circuit Range/Performance

- Code Popularity: 24,223 Views
- Repair Importance Level: 2/3
- Repair Difficulty Level: 2/3
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What are the Possible Causes of the DTC P245B?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Coolant System
  • EGR Cooler
  • Faulty Exhaust Gas Recirculation (EGR) Temperature Sensor
  • Exhaust Gas Recirculation (EGR) Temperature Sensor harness is open or shorted
  • Exhaust Gas Recirculation (EGR) Temperature Sensor circuit poor electrical connection
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How to Fix the DTC P245B?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P245B code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code P245B Description

The Exhaust Gas Recirculation (EGR) Cooler bypass valve is used to bypass the EGR cooler when the engine is in an active regeneration mode. This is to prevent EGR cooler fouling. There are two portions to this diagnostic. At key on the Engine Control Module (ECM) drives the control line low and then high and monitors the correct status response. Throughout engine operation looks for status response voltage to be within 5-8 volts. The EGR Cooler Bypass valve will send a signal between 1.0 and 1.7 volts. When this occurs the ECM logs a fault. The second portion of this diagnostic monitors Exhaust Gas Recirculation temperature. If the EGR Cooler Bypass valve was in bypass mode incorrectly, the exhaust gas recirculation temperatures would exceed a temperature limit; this condition will also trigger the fault. The ECM will light a MIL lamp immediately after this diagnostic runs and fails. The ECM will turn off the MIL lamp after the diagnostic passes in four consecutive drive cycles.
OBDII Code P245B - Exhaust Gas Recirculation Cooler Bypass Control Circuit Range/Performance - AutoCodes.com
P245B Code - Exhaust Gas Recirculation Cooler Bypass Control Circuit Range/Performance

Need More Information on the Code?

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Information for Specific Makes

  • P245B Buick Exhaust Gas Recirculation Cooler Bypass Valve Performance
  • P245B Cadillac Exhaust Gas Recirculation Cooler Bypass Valve Performance
  • P245B Chevrolet Exhaust Gas Recirculation Cooler Bypass Valve Performance
  • P245B Dodge Exhaust Gas Recirculation Cooler Bypass Control Circuit Range/Performance
  • P245B GMC Exhaust Gas Recirculation Cooler Bypass Valve Performance

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Code P245B comments

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