Powertrain Codes

P2459

Technical Definition:

Diesel Particulate Filter Regeneration Frequency

Trouble Code: P2459
Address: 0x2459
System: Powertrain
Subsystem: Auxiliary Emission Controls
Technical Description:

Possible Causes:

Possible Symptoms:

Diesel Particulate Filter Regeneration Frequency

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Exhaust leak
– Improperly installed or loose Exhaust Gas Temperature (EGT)
– Low engine compression
– Corroed fuel injector
– Water in the fuel system

Specific Makes:

P245A

Technical Definition:

Exhaust Gas Recirculation (EGR) Cooler Bypass Control Circuit / Open

Trouble Code: P245A
Address: 0x245A
System: Powertrain
Subsystem: Auxiliary Emission Controls
Technical Description:

Possible Causes:

Possible Symptoms:

Exhaust Gas Recirculation Cooler Bypass Control Circuit/Open

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P245B

Technical Definition:

Exhaust Gas Recirculation (EGR) Cooler Bypass Control Circuit Range / Performance

Trouble Code: P245B
Address: 0x245B
System: Powertrain
Subsystem: Auxiliary Emission Controls
Technical Description:

Possible Causes:

Possible Symptoms:

Exhaust Gas Recirculation Cooler Bypass Control Circuit Range/Performance

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P2457

Technical Definition:

Exhaust Gas Recirculation (EGR) Cooling System Performance

Trouble Code: P2457
Address: 0x2457
System: Powertrain
Subsystem: Auxiliary Emission Controls
Technical Description:

Possible Causes:

Possible Symptoms:

Exhaust Gas Recirculation Cooling System Performance

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P2458

Technical Definition:

Diesel Particulate Filter Regeneration Duration

Trouble Code: P2458
Address: 0x2458
System: Powertrain
Subsystem: Auxiliary Emission Controls
Technical Description:

Possible Causes:

Possible Symptoms:

Diesel Particulate Filter Regeneration Duration

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P2456

Technical Definition:

Diesel Particulate Filter Differential Pressure Sensor Circuit Intermittent / Erratic

Trouble Code: P2456
Address: 0x2456
System: Powertrain
Subsystem: Auxiliary Emission Controls
Technical Description:

Possible Causes:

Possible Symptoms:

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P2450

Technical Definition:

Evaporative Emission (EVAP) System Switching Valve Performance / Stuck Open

Trouble Code: P2450
Address: 0x2450
System: Powertrain
Subsystem: Auxiliary Emission Controls
Technical Description:

Possible Causes:

Possible Symptoms:

Evaporative Emission System Switching Valve Performance/Stuck Open

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P2451

Technical Definition:

Evaporative Emission (EVAP) System Switching Valve Stuck Closed

Trouble Code: P2451
Address: 0x2451
System: Powertrain
Subsystem: Auxiliary Emission Controls
Technical Description:

Possible Causes:

Possible Symptoms:

Evaporative Emission System Switching Valve Stuck Closed

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P244F

Technical Definition:

Exhaust Temperature Too High For Particulate Filter Regeneration, Bank 2

Trouble Code: P244F
Address: 0x244F
System: Powertrain
Subsystem:
Technical Description:

Possible Causes:

Possible Symptoms:

Exhaust Temperature Too High For Particulate Filter Regeneration Bank 2

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P244D

Technical Definition:

Exhaust Temperature Too High For Particulate Filter Regeneration, Bank 1

Trouble Code: P244D
Address: 0x244D
System: Powertrain
Subsystem:
Technical Description:

Possible Causes:

Possible Symptoms:

Exhaust Temperature Too High For Particulate Filter Regeneration Bank 1

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Check coolant level
– Check fuel quality
– Faulty Upstream Exhaust Temperature
– Upstream Exhaust Temperature harness is open or shorted
– Upstream Exhaust Temperature circuit poor electrical connection
– Inspect tailpipes for abnormal sediment; for example black soot, white ash, oil, coolant, or fuel
– Inspect vehicle for coolant, oil and fuel leaks

Specific Makes:

P244E

Technical Definition:

Exhaust Temperature Too Low For Particulate Filter Regeneration, Bank 2

Trouble Code: P244E
Address: 0x244E
System: Powertrain
Subsystem:
Technical Description:

Possible Causes:

Possible Symptoms:

Exhaust Temperature Too Low For Particulate Filter Regeneration Bank 2

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P244A

Technical Definition:

Diesel Particulate Filter Differential Pressure Too Low

Trouble Code: P244A
Address: 0x244A
System: Powertrain
Subsystem:
Technical Description:

Possible Causes:

Possible Symptoms:

Diesel Particulate Filter Differential Pressure Too Low Bank 1

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P244B

Technical Definition:

Diesel Particulate Filter Differential Pressure Too High

Trouble Code: P244B
Address: 0x244B
System: Powertrain
Subsystem:
Technical Description:

Possible Causes:

Possible Symptoms:

Diesel Particulate Filter Differential Pressure Too High Bank 1

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P244C

Technical Definition:

Exhaust Temperature Too Low For Particulate Filter Regeneration, Bank 1

Trouble Code: P244C
Address: 0x244C
System: Powertrain
Subsystem:
Technical Description:

Possible Causes:

Possible Symptoms:

Exhaust Temperature Too Low For Particulate Filter Regeneration Bank 1

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Check coolant level
– Check fuel quality
– Faulty Upstream Exhaust Temperature
– Upstream Exhaust Temperature harness is open or shorted
– Upstream Exhaust Temperature circuit poor electrical connection
– Inspect tailpipes for abnormal sediment; for example black soot, white ash, oil, coolant, or fuel
– Inspect vehicle for coolant, oil and fuel leaks

Specific Makes:

P2446

Technical Definition:

Secondary Air Injection System Pump Stuck On (Bank 2)

Trouble Code: P2446
Address: 0x2446
System: Powertrain
Subsystem: Auxiliary Emission Controls
Technical Description:

Possible Causes:

Possible Symptoms:

Secondary Air Injection System Pump Stuck On Bank 2

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P2447

Technical Definition:

Secondary Air Injection System Pump Stuck Off (Bank 2)

Trouble Code: P2447
Address: 0x2447
System: Powertrain
Subsystem: Auxiliary Emission Controls
Technical Description:

Possible Causes:

Possible Symptoms:

Secondary Air Injection System Pump Stuck Off Bank 2

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes: