Powertrain Codes

P21B4

Technical Definition:

NOX Adsorber – Over Temperature (Bank 1)

Trouble Code: P21B4
Address: 0x21B4
System: Powertrain
Subsystem:

Technical Description:

Possible Causes:

Possible Symptoms:

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P21B0

Technical Definition:

Reductant Level Sensor C Circuit High

Trouble Code: P21B0
Address: 0x21B0
System: Powertrain
Subsystem:

Technical Description:

Possible Causes:

Possible Symptoms:

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P21B1

Technical Definition:

Reductant Level Sensor C Circuit Intermittent/Erratic

Trouble Code: P21B1
Address: 0x21B1
System: Powertrain
Subsystem:

Technical Description:

Possible Causes:

Possible Symptoms:

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P21AE

Technical Definition:

Reductant Level Sensor C Circuit Range/Performance

Trouble Code: P21AE
Address: 0x21AE
System: Powertrain
Subsystem:

Technical Description:

Possible Causes:

Possible Symptoms:

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P21AF

Technical Definition:

Reductant Level Sensor C Circuit Low

Trouble Code: P21AF
Address: 0x21AF
System: Powertrain
Subsystem:

Technical Description:

Possible Causes:

Possible Symptoms:

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P21AA

Technical Definition:

Reductant Level Sensor B Circuit Low

Trouble Code: P21AA
Address: 0x21AA
System: Powertrain
Subsystem:

Technical Description:

Possible Causes:

Possible Symptoms:

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P21AB

Technical Definition:

Reductant Level Sensor B Circuit High

Trouble Code: P21AB
Address: 0x21AB
System: Powertrain
Subsystem:

Technical Description:

Possible Causes:

Possible Symptoms:

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P21AC

Technical Definition:

Reductant Level Sensor B Circuit Intermittent/Erratic

Trouble Code: P21AC
Address: 0x21AC
System: Powertrain
Subsystem:

Technical Description:

Possible Causes:

Possible Symptoms:

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P21AD

Technical Definition:

Reductant Level Sensor C Circuit

Trouble Code: P21AD
Address: 0x21AD
System: Powertrain
Subsystem:

Technical Description:

Possible Causes:

Possible Symptoms:

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P21A6

Technical Definition:

Cylinder 11 Air-Fuel Ratio Imbalance

Trouble Code: P21A6
Address: 0x21A6
System: Powertrain
Subsystem:

Technical Description:

Possible Causes:

Possible Symptoms:

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P21A7

Technical Definition:

Cylinder 12 Air-Fuel Ratio Imbalance

Trouble Code: P21A7
Address: 0x21A7
System: Powertrain
Subsystem:

Technical Description:

Possible Causes:

Possible Symptoms:

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P21A8

Technical Definition:

Reductant Level Sensor B Circuit

Trouble Code: P21A8
Address: 0x21A8
System: Powertrain
Subsystem:

Technical Description:

Possible Causes:

Possible Symptoms:

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P21A9

Technical Definition:

Reductant Level Sensor B Circuit Range/Performance

Trouble Code: P21A9
Address: 0x21A9
System: Powertrain
Subsystem:

Technical Description:

Possible Causes:

Possible Symptoms:

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P21A5

Technical Definition:

Cylinder 10 Air-Fuel Ratio Imbalance

Trouble Code: P21A5
Address: 0x21A5
System: Powertrain
Subsystem:

Technical Description:

Possible Causes:

Possible Symptoms:

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P21A1

Technical Definition:

Cylinder 6 Air-Fuel Ratio Imbalance

Trouble Code: P21A1
Address: 0x21A1
System: Powertrain
Subsystem:

Technical Description:

Possible Causes:

Possible Symptoms:

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P21A2

Technical Definition:

Cylinder 7 Air-Fuel Ratio Imbalance

Trouble Code: P21A2
Address: 0x21A2
System: Powertrain
Subsystem:

Technical Description:

Possible Causes:

Possible Symptoms:

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P21A3

Technical Definition:

Cylinder 8 Air-Fuel Ratio Imbalance

Trouble Code: P21A3
Address: 0x21A3
System: Powertrain
Subsystem:

Technical Description:

Possible Causes:

Possible Symptoms:

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P21A4

Technical Definition:

Cylinder 9 Air-Fuel Ratio Imbalance

Trouble Code: P21A4
Address: 0x21A4
System: Powertrain
Subsystem:

Technical Description:

Possible Causes:

Possible Symptoms:

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P219E

Technical Definition:

Cylinder 3 Air-Fuel Ratio Imbalance

Trouble Code: P219E
Address: 0x219E
System: Powertrain
Subsystem:

Technical Description:

Possible Causes:

Possible Symptoms:

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P219F

Technical Definition:

Cylinder 4 Air-Fuel Ratio Imbalance

Trouble Code: P219F
Address: 0x219F
System: Powertrain
Subsystem:

Technical Description:

Possible Causes:

Possible Symptoms:

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes: