P34xx OBD-II Codes (P3400–P3499)

100 fault codes in the P34xx range. Click any code for causes, diagnostic steps, severity, and common fixes.

P3400 moderate
Cylinder Deactivation System (Bank 1)
P3401 moderate
Cylinder 1 Deactivation/Intake Valve Control Circuit/Open
P3402 moderate
Cylinder 1 Deactivation/Intake Valve Control Performance
P3403 moderate
Cylinder 1 Deactivation/Intake Valve Control Circuit Low
P3404 moderate
Cylinder 1 Deactivation/Intake Valve Control Circuit High
P3405 moderate
Cylinder 1 Exhaust Valve Control Circuit/Open
P3406 moderate
Cylinder 1 Exhaust Valve Control Performance
P3407 moderate
Cylinder 1 Exhaust Valve Control Circuit Low
P3408 moderate
Cylinder 1 Exhaust Valve Control Circuit High
P3409 moderate
Cylinder 2 Deactivation/Intake Valve Control Circuit/Open
P3410 moderate
Cylinder 2 Deactivation/Intake Valve Control Performance
P3411 moderate
Cylinder 2 Deactivation/Intake Valve Control Circuit Low
P3412 moderate
Cylinder 2 Deactivation/Intake Valve Control Circuit High
P3413 moderate
Cylinder 2 Exhaust Valve Control Circuit/Open
P3414 moderate
Cylinder 2 Exhaust Valve Control Performance
P3415 moderate
Cylinder 2 Exhaust Valve Control Circuit Low
P3416 moderate
Cylinder 2 Exhaust Valve Control Circuit High
P3417 moderate
Cylinder 3 Deactivation/Intake Valve Control Circuit/Open
P3418 moderate
Cylinder 3 Deactivation/Intake Valve Control Performance
P3419 moderate
Cylinder 3 Deactivation/Intake Valve Control Circuit Low
P3420 moderate
Cylinder 3 Deactivation/Intake Valve Control Circuit High
P3421 moderate
Cylinder 3 Exhaust Valve Control Circuit/Open
P3422 moderate
Cylinder 3 Exhaust Valve Control Performance
P3423 moderate
Cylinder 3 Exhaust Valve Control Circuit Low
P3424 moderate
Cylinder 3 Exhaust Valve Control Circuit High
P3425 moderate
Cylinder 4 Deactivation/Intake Valve Control Circuit/Open
P3426 moderate
Cylinder 4 Deactivation/Intake Valve Control Performance
P3427 moderate
Cylinder 4 Deactivation/Intake Valve Control Circuit Low
P3428 moderate
Cylinder 4 Deactivation/Intake Valve Control Circuit High
P3429 moderate
Cylinder 4 Exhaust Valve Control Circuit/Open
P3430 moderate
Cylinder 4 Exhaust Valve Control Performance
P3431 moderate
Cylinder 4 Exhaust Valve Control Circuit Low
P3432 moderate
Cylinder 4 Exhaust Valve Control Circuit High
P3433 moderate
Cylinder 5 Deactivation/Intake Valve Control Circuit/Open
P3434 moderate
Cylinder 5 Deactivation/Intake Valve Control Performance
P3435 moderate
Cylinder 5 Deactivation/Intake Valve Control Circuit Low
P3436 moderate
Cylinder 5 Deactivation/Intake Valve Control Circuit High
P3437 moderate
Cylinder 5 Exhaust Valve Control Circuit/Open
P3438 moderate
Cylinder 5 Exhaust Valve Control Performance
P3439 moderate
Cylinder 5 Exhaust Valve Control Circuit Low
P3440 moderate
Cylinder 5 Exhaust Valve Control Circuit High
P3441 moderate
Cylinder 6 Deactivation/Intake Valve Control Circuit/Open
P3442 moderate
Cylinder 6 Deactivation/Intake Valve Control Performance
P3443 moderate
Cylinder 6 Deactivation/Intake Valve Control Circuit Low
P3444 moderate
Cylinder 6 Deactivation/Intake Valve Control Circuit High
P3445 moderate
Cylinder 6 Exhaust Valve Control Circuit/Open
P3446 moderate
Cylinder 6 Exhaust Valve Control Performance
P3447 moderate
Cylinder 6 Exhaust Valve Control Circuit Low
P3448 moderate
Cylinder 6 Exhaust Valve Control Circuit High
P3449 moderate
Cylinder 7 Deactivation/Intake Valve Control Circuit/Open
P3450 moderate
Cylinder 7 Deactivation/Intake Valve Control Performance
P3451 moderate
Cylinder 7 Deactivation/Intake Valve Control Circuit Low
P3452 moderate
Cylinder 7 Deactivation/Intake Valve Control Circuit High
P3453 moderate
Cylinder 7 Exhaust Valve Control Circuit/Open
P3454 moderate
Cylinder 7 Exhaust Valve Control Performance
P3455 moderate
Cylinder 7 Exhaust Valve Control Circuit Low
P3456 moderate
Cylinder 7 Exhaust Valve Control Circuit High
P3457 moderate
Cylinder 8 Deactivation/Intake Valve Control Circuit/Open
P3458 moderate
Cylinder 8 Deactivation/Intake Valve Control Performance
P3459 moderate
Cylinder 8 Deactivation/Intake Valve Control Circuit Low
P3460 moderate
Cylinder 8 Deactivation/Intake Valve Control Circuit High
P3461 moderate
Cylinder 8 Exhaust Valve Control Circuit/Open
P3462 moderate
Cylinder 8 Exhaust Valve Control Performance
P3463 moderate
Cylinder 8 Exhaust Valve Control Circuit Low
P3464 moderate
Cylinder 8 Exhaust Valve Control Circuit High
P3465 moderate
Cylinder 9 Deactivation/Intake Valve Control Circuit/Open
P3466 moderate
Cylinder 9 Deactivation/Intake Valve Control Performance
P3467 moderate
Cylinder 9 Deactivation/Intake Valve Control Circuit Low
P3468 moderate
Cylinder 9 Deactivation/Intake Valve Control Circuit High
P3469 moderate
Cylinder 9 Exhaust Valve Control Circuit/Open
P3470 moderate
Cylinder 9 Exhaust Valve Control Performance
P3471 moderate
Cylinder 9 Exhaust Valve Control Circuit Low
P3472 moderate
Cylinder 9 Exhaust Valve Control Circuit High
P3473 moderate
Cylinder 10 Deactivation/Intake Valve Control Circuit/Open
P3474 moderate
Cylinder 10 Deactivation/Intake Valve Control Performance
P3475 moderate
Cylinder 10 Deactivation/Intake Valve Control Circuit Low
P3476 moderate
Cylinder 10 Deactivation/Intake Valve Control Circuit High
P3477 moderate
Cylinder 10 Exhaust Valve Control Circuit/Open
P3478 moderate
Cylinder 10 Exhaust Valve Control Performance
P3479 moderate
Cylinder 10 Exhaust Valve Control Circuit Low
P3480 moderate
Cylinder 10 Exhaust Valve Control Circuit High
P3481 moderate
Cylinder 11 Deactivation/Intake Valve Control Circuit/Open
P3482 moderate
Cylinder 11 Deactivation/Intake Valve Control Performance
P3483 moderate
Cylinder 11 Deactivation/Intake Valve Control Circuit Low
P3484 moderate
Cylinder 11 Deactivation/Intake Valve Control Circuit High
P3485 moderate
Cylinder 11 Exhaust Valve Control Circuit/Open
P3486 moderate
Cylinder 11 Exhaust Valve Control Performance
P3487 moderate
Cylinder 11 Exhaust Valve Control Circuit Low
P3488 moderate
Cylinder 11 Exhaust Valve Control Circuit High
P3489 critical
Manufacturer-specific powertrain code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information
P3490 moderate
Manufacturer-specific powertrain code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information
P3491 moderate
Cylinder 12 Deactivation/Intake Valve Control Circuit Low
P3492 moderate
Cylinder 12 Deactivation/Intake Valve Control Circuit High
P3493 moderate
Cylinder 12 Exhaust Valve Control Circuit/Open
P3494 moderate
Cylinder 12 Exhaust Valve Control Performance
P3495 moderate
Cylinder 12 Exhaust Valve Control Circuit Low
P3496 moderate
Cylinder 12 Exhaust Valve Control Circuit High
P3497 moderate
Manufacturer-specific powertrain code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information
P3498 moderate
Manufacturer-specific powertrain code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information
P3499 critical
Manufacturer-specific powertrain code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information
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