THE CODE DIRECTORY
Diagnostic code references — Page 106.
Browse canonical reference entries. Each definition keeps its own source and vehicle-applicability limits.
Generic OBD-II
P3489
Cylinder 12 Deactivation/Intake Valve Control Circuit/Open
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Generic OBD-II
P3490
Cylinder 12 Deactivation/Intake Valve Control Circuit Performance
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Generic OBD-II
P3491
Cylinder 12 Deactivation/Intake Valve Control Circuit Low
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Generic OBD-II
P3492
Cylinder 12 Deactivation/Intake Valve Control Circuit High
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Generic OBD-II
P3493
Cylinder 12 Exhaust Valve Control Circuit/Open
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Generic OBD-II
P3494
Cylinder 12 Exhaust Valve Control Circuit Performance
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Generic OBD-II
P3495
Cylinder 12 Exhaust Valve Control Circuit Low
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Generic OBD-II
P3496
Cylinder 12 Exhaust Valve Control Circuit High
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Generic OBD-II
P3497
Cylinder Deactivation System Bank 2
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Generic OBD-II
P3498
Cylinder 1 Deactivation/Intake Valve Performance
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Generic OBD-II
P3499
Cylinder 2 Deactivation/Intake Valve Performance
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Generic OBD-II
P349A
Cylinder 3 Deactivation/Intake Valve Performance
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Generic OBD-II
P349B
Cylinder 4 Deactivation/Intake Valve Performance
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Generic OBD-II
P349C
Cylinder 5 Deactivation/Intake Valve Performance
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Generic OBD-II
P349D
Cylinder 6 Deactivation/Intake Valve Performance
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Generic OBD-II
P349E
Cylinder 7 Deactivation/Intake Valve Performance
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Generic OBD-II
P349F
Cylinder 8 Deactivation/Intake Valve Performance
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Generic OBD-II
P34A0
Cylinder 9 Deactivation/Intake Valve Performance
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Generic OBD-II
P34A1
Cylinder 10 Deactivation/Intake Valve Performance
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Generic OBD-II
P34A2
Cylinder 11 Deactivation/Intake Valve Performance
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Generic OBD-II
P34A3
Cylinder 12 Deactivation/Intake Valve Performance
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Generic OBD-II
P34A4
A Camshaft Position Actuator Temperature Sensor Circuit Bank 1
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Generic OBD-II
P34A5
A Camshaft Position Actuator Temperature Sensor Range/Performance Bank 1
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Generic OBD-II
P34A6
A Camshaft Position Actuator Temperature Sensor Circuit Low Bank 1
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Generic OBD-II
P34A7
A Camshaft Position Actuator Temperature Sensor Circuit High Bank 1
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Generic OBD-II
P34A8
A Camshaft Position Actuator Temperature Sensor Circuit Bank 2
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Generic OBD-II
P34A9
A Camshaft Position Actuator Temperature Sensor Range/Performance Bank 2
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Generic OBD-II
P34AA
A Camshaft Position Actuator Temperature Sensor Circuit Low Bank 2
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Generic OBD-II
P34AB
A Camshaft Position Actuator Temperature Sensor Circuit High Bank 2
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Generic OBD-II
P34AC
A Camshaft Position Actuator Position Sensor A Circuit Bank 1
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Generic OBD-II
P34AD
A Camshaft Position Actuator Position Sensor A Range/Performance Bank 1
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Generic OBD-II
P34AE
A Camshaft Position Actuator Position Sensor A Circuit Low Bank 1
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Generic OBD-II
P34AF
A Camshaft Position Actuator Position Sensor A Circuit High Bank 1
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Generic OBD-II
P34B0
A Camshaft Position Actuator Position Sensor A Circuit Bank 2
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Generic OBD-II
P34B1
A Camshaft Position Actuator Position Sensor A Range/Performance Bank 2
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Generic OBD-II
P34B2
A Camshaft Position Actuator Position Sensor A Circuit Low Bank 2
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Generic OBD-II
P34B3
A Camshaft Position Actuator Position Sensor A Circuit High Bank 2
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Generic OBD-II
P34B4
B Camshaft Position Actuator Temperature Sensor Circuit Bank 1
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Generic OBD-II
P34B5
B Camshaft Position Actuator Temperature Sensor Range/Performance Bank 1
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Generic OBD-II
P34B6
B Camshaft Position Actuator Temperature Sensor Circuit Low Bank 1
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Generic OBD-II
P34B7
B Camshaft Position Actuator Temperature Sensor Circuit High Bank 1
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Generic OBD-II
P34B8
B Camshaft Position Actuator Temperature Sensor Circuit Bank 2
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Generic OBD-II
P34B9
B Camshaft Position Actuator Temperature Sensor Range/Performance Bank 2
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Generic OBD-II
P34BA
B Camshaft Position Actuator Temperature Sensor Circuit Low Bank 2
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Generic OBD-II
P34BB
B Camshaft Position Actuator Temperature Sensor Circuit High Bank 2
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Generic OBD-II
P34BC
B Camshaft Position Actuator Position Sensor A Circuit Bank 1
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Generic OBD-II
P34BD
B Camshaft Position Actuator Position Sensor A Range/Performance Bank 1
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Generic OBD-II
P34BE
B Camshaft Position Actuator Position Sensor A Circuit Low Bank 1
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Generic OBD-II
P34BF
B Camshaft Position Actuator Position Sensor A Circuit High Bank 1
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Generic OBD-II
P34C0
B Camshaft Position Actuator Position Sensor A Circuit Bank 2
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Generic OBD-II
P34C1
B Camshaft Position Actuator Position Sensor A Range/Performance Bank 2
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Generic OBD-II
P34C2
B Camshaft Position Actuator Position Sensor A Circuit Low Bank 2
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Generic OBD-II
P34C3
B Camshaft Position Actuator Position Sensor A Circuit High Bank 2
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Generic OBD-II
P34C4
A Camshaft Position Actuator Control Circuit Driver Current/Temperature Too High Bank 1
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Generic OBD-II
P34C5
A Camshaft Position Actuator Control Circuit Driver Current/Temperature Too High Bank 2
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Generic OBD-II
P34C6
B Camshaft Position Actuator Control Circuit Driver Current/Temperature Too High Bank 1
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Generic OBD-II
P34C7
B Camshaft Position Actuator Control Circuit Driver Current/Temperature Too High Bank 2
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Generic OBD-II
P34C8
Camshaft Position Control Module Performance
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Generic OBD-II
U0001
The transmission controller reports a CAN bus-off state
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Generic OBD-II
U0002
High Speed CAN Communication Bus Performance
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Generic OBD-II
U0003
High Speed CAN Communication Bus (+) Open
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Generic OBD-II
U0004
High Speed CAN Communication Bus (+) Low
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Generic OBD-II
U0005
High Speed CAN Communication Bus (+) High
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Generic OBD-II
U0006
High Speed CAN Communication Bus (-) Open
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Generic OBD-II
U0007
High Speed CAN Communication Bus (-) Low
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Generic OBD-II
U0008
High Speed CAN Communication Bus (-) High
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Generic OBD-II
U0009
High Speed CAN Communication Bus (-) shorted to Bus (+)
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Generic OBD-II
U0010
Transit camera-module code after BCM replacement programming
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Generic OBD-II
U0011
Medium Speed CAN Communication Bus Performance
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Generic OBD-II
U0012
Medium Speed CAN Communication Bus (+) Open
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Generic OBD-II
U0013
Medium Speed CAN Communication Bus (+) Low
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Generic OBD-II
U0014
Medium Speed CAN Communication Bus (+) High
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Generic OBD-II
U0015
Medium Speed CAN Communication Bus (-) Open
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Generic OBD-II
U0016
Medium Speed CAN Communication Bus (-) Low
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Generic OBD-II
U0017
Medium Speed CAN Communication Bus (-) High
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Generic OBD-II
U0018
Medium Speed CAN Communication Bus (-) shorted to Bus (+)
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Generic OBD-II
U0019
ProMaster CAN-B faults and the BCM configuration step
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Generic OBD-II
U0020
Low Speed CAN Communication Bus Performance
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Generic OBD-II
U0021
Low Speed CAN Communication Bus (+) Open
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Generic OBD-II
U0022
Low Speed CAN Communication Bus (+) Low
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Generic OBD-II
U0023
Low Speed CAN Communication Bus (+) High
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Generic OBD-II
U0024
Low Speed CAN Communication Bus (-) Open
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Generic OBD-II
U0025
Low Speed CAN Communication Bus (-) Low
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Generic OBD-II
U0026
Low Speed CAN Communication Bus (-) High
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Generic OBD-II
U0027
Low Speed CAN Communication Bus (-) shorted to Bus (+)
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Generic OBD-II
U0028
GM truck communication faults during electrical-load events
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Generic OBD-II
U0029
Vehicle Communication Bus A Performance
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Generic OBD-II
U0030
Vehicle Communication Bus A (+) Open
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Generic OBD-II
U0031
Vehicle Communication Bus A (+) Low
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Generic OBD-II
U0032
Vehicle Communication Bus A (+) High
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Generic OBD-II
U0033
Vehicle Communication Bus A (-) Open
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Generic OBD-II
U0034
Vehicle Communication Bus A (-) Low
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Generic OBD-II
U0035
Vehicle Communication Bus A (-) High
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Generic OBD-II
U0036
Vehicle Communication Bus A (-) shorted to Bus A (+)
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Generic OBD-II
U0037
Mustang GTD suspension warnings and VDM software
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Generic OBD-II
U0038
Vehicle Communication Bus B Performance
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Generic OBD-II
U0039
Vehicle Communication Bus B (+) Open
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Generic OBD-II
U0040
Vehicle Communication Bus B (+) Low
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Generic OBD-II
U0041
Vehicle Communication Bus B (+) High
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Generic OBD-II
U0042
Vehicle Communication Bus B (-) Open
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These are code references, not a list of confirmed faults on every vehicle. Read the source and applicability notes, then match the exact vehicle, year, engine and scan report.