P3442 — Cylinder 6 Deactivation/Intake Valve Control Circuit Performance

For Ford vehicles

cylinder 6 deactivation/intake valve control circuit – range/performance problem

powertrain (engine/transmission)

Is it safe to drive?

Short-term driving is OK In most cases the car remains drivable, possibly with reduced performance or a disabled auxiliary system. If symptoms include stalling, no-start or brake/steering warnings, treat it as urgent.

How to diagnose with an OBD scanner

Read the code and freeze frame Connect an OBD2 scanner, confirm P3442 is stored, and save the freeze frame data — it shows engine conditions when the fault was detected.
Check for companion codes and TSBs Related codes often reveal the real root cause. Also check manufacturer technical service bulletins (TSB) for your make and model — many P0xxx issues have factory fixes or software updates. Search by VIN on the manufacturer site or nhtsa.gov.
Inspect wiring and connectors Visually inspect the wiring harness and connectors related to the cylinder 6 deactivation/intake valve control for damage, corrosion, chafing or poor contact.
Subsystem check Measure reference voltage, ground and signal continuity at the component connector.
Subsystem check Wiggle-test the harness while watching the signal in live data — dropouts reveal broken wires.
Verify the repair Clear the code, complete a full drive cycle including the conditions from the freeze frame, and confirm P3442 does not return.

Approximate repair cost

Repair cost depends on which component actually failed. Typical scenarios for P3442 (parts and labor, USD, independent shop rates): Repair wiring or connectors: $80–$250; Control module repair: $300–$1,000; Replace the faulty sensor or actuator: $150–$500. Overall, fixing P3442 usually costs between $80 and $1,000. An accurate diagnosis before buying parts saves money — the most expensive scenario is rarely the first one to check.

Common questions

Will P3442 clear itself?

Sometimes P3442 clears after a few drive cycles if the fault was intermittent — for example a loose connector or a tank of bad fuel. The underlying cause usually remains, so the code tends to return. Clear it once; if it comes back, diagnose rather than erase it repeatedly.

What is the most common cause of P3442?

The most common causes are: blown fuse feeding the circuit, control module driver fault, open or shorted wiring in the circuit.

How do I diagnose P3442 myself?

Start with a scan: confirm P3442, save the freeze frame and note any companion codes. Then inspect the wiring and connectors related to the cylinder 6 deactivation/intake valve control, and verify the suspect component against live data before buying parts.

What does OBD2 code P3442 mean?

Cylinder 6 Deactivation/Intake Valve Control Circuit Performance (P3442): a powertrain (engine/transmission) fault affecting the sensor and actuator circuits. The car is usually drivable while you plan the repair. Most often caused by blown fuse feeding the circuit, control module driver fault, open or shorted wiring in the circuit.

What are the symptoms of P3442?

Drivers most often notice: increased fuel consumption in some cases, the affected system operates intermittently or not at all, possible limp mode depending on the affected component, Check Engine Light on.

What does P3442 mean?

P3442 (Cylinder 6 Deactivation/Intake Valve Control Circuit Performance) is stored when self-diagnostics detect abnormal readings or behaviour of the sensor and actuator circuits. It belongs to the powertrain (engine/transmission) category.

P3442 refers specifically to cylinder 6. On inline engines cylinders are counted from the front (belt end); on V-engines the numbering depends on the manufacturer, so check the firing-order diagram for your exact model. Location matters for the repair bill: some cylinders require intake manifold removal, which adds labor time.

This code does not appear from a single bad reading: the module must see the fault condition repeat under defined operating conditions before it turns on the warning light. The freeze frame captured with P3442 — engine load, rpm, temperature, speed — tells you exactly when the problem occurs, so reproduce those conditions when testing.

What causes P3442?

poor ground connection
faulty sensor or actuator of the affected circuit
blown fuse feeding the circuit
open or shorted wiring in the circuit
control module driver fault

Common symptoms of P3442

increased fuel consumption in some cases
the affected system operates intermittently or not at all
possible limp mode depending on the affected component
Check Engine Light on

How to diagnose P3442

Connect an OBD2 scanner, confirm P3442 is stored, and save the freeze frame data — it shows engine conditions when the fault was detected.
Related codes often reveal the real root cause. Also check manufacturer technical service bulletins (TSB) for your make and model — many P0xxx issues have factory fixes or software updates. Search by VIN on the manufacturer site or nhtsa.gov.
Visually inspect the wiring harness and connectors related to the cylinder 6 deactivation/intake valve control for damage, corrosion, chafing or poor contact.
Measure reference voltage, ground and signal continuity at the component connector.
Wiggle-test the harness while watching the signal in live data — dropouts reveal broken wires.
Clear the code, complete a full drive cycle including the conditions from the freeze frame, and confirm P3442 does not return.

How to fix P3442

Start with the cheapest and most common causes before replacing expensive parts:

Repair wiring or connectors — $80–$250
Control module repair — $300–$1,000
Replace the faulty sensor or actuator — $150–$500

How much does it cost to fix P3442?

Repair cost depends on which component actually failed. Typical scenarios for P3442 (parts and labor, USD, independent shop rates):

Repair wiring or connectors: $80–$250
Control module repair: $300–$1,000
Replace the faulty sensor or actuator: $150–$500

Overall, fixing P3442 usually costs between $80 and $1,000. An accurate diagnosis before buying parts saves money — the most expensive scenario is rarely the first one to check.

Can you drive with P3442?

In most cases the car remains drivable, possibly with reduced performance or a disabled auxiliary system. If symptoms include stalling, no-start or brake/steering warnings, treat it as urgent.