OBD-II Code · Ignition
P0352
Ignition Coil B Primary/Secondary Circuit
Severity
high
Left alone, this one tends to take other parts with it.
Can you drive it
Not for long
Driving on this one risks further damage. Get it to a shop rather than carrying on with it.
Indicative cost (USD)
$80–$300
Varies by vehicle, diagnosis, parts, and local labor. This is not a repair quote.
Coil pack 2 fault.
How a shop works this
Work from evidence to part, not the other way round. A code names a circuit or a symptom; it does not name the part that failed.
Note every code that is set, not just this one.
Codes that appear together usually narrow the cause faster than any one of them read alone.
Read the freeze frame — the conditions the fault was recorded under.
Cold or warm, idle or load, road speed and engine speed. A fault that only appears cold is a different fault from one that only appears under load, even with the same code on the scanner.
Confirm the fault is current rather than history.
Clear the code and see whether it returns under those same conditions. A code that does not come back may have been logged during a repair, a flat battery, or a bad connection that has since been disturbed.
Then work the likely-causes list in the order shown.
That order is what a shop checks first for this code — wiring and connections before the component they run to, because a connector costs nothing to inspect and is a common answer.
If the code comes back after a repair, the underlying fault is still there. That is the point to bring in a scanner with live data and freeze-frame, or a shop that has one.
Common symptoms
- Misfire
- Check engine light
- Rough running
Likely causes
- Failed coil 2Most common
- Wiring
- Connector
Read the full diagnostic procedureP0352 is the cylinder 2 ignition coil primary/secondary circuit fault — same monitoring logic as P0351, just one cylinder over.
P0352 is the cylinder 2 ignition coil primary/secondary circuit fault — same monitoring logic as P0351, just one cylinder over.
Cylinder 2 location varies by manufacturer firing order and bank layout
- on Ford Modular V8s cylinder 2 is the second from the front on the passenger bank (bank 1, position 2), on GM LS V8s cylinder 2 is on bank 2 (passenger side) at the front, on Chrysler Hemi cylinder 2 is the front-left (driver side bank), on BMW/Mercedes inline-6s it's the second cylinder from the timing-chain end, and on Toyota 2GR-FE V6 it's the rear bank front cylinder.
- Cheapest-first diagnostic: swap the cylinder 2 coil with a known-good neighbor (cylinder 4 or 6) and clear codes; if P0352 follows the moved coil to that cylinder, condemn the coil ($35-$120).
- If P0352 stays at cylinder 2, scope the trigger wire at the connector — you want a square-wave pulse synced to crank position with 3-6ms dwell.
- No pulse = broken trigger wire (resistance check from ECM pin to coil pin should be under 0.5 ohms) or failed ECM driver.
- Measure primary resistance with the coil off the engine: typical spec is 0.4-2.0 ohms cold; secondary 6,000-15,000 ohms.
- A coil that reads in-spec cold but still triggers P0352 under load is the classic 'fails when hot' failure — replace it, meter readings lie on heat-soaked coils.
Vehicle-specific patterns2004-2010 Ford F-150 5.4L 3V cylinder 2 P0352 is just as common as P0351 — same TSB 08-7-6 coil/boot kit applies, and on this platform plugs and coil…
- 2004-2010Ford F-150 5.4L 3V cylinder 2 P0352 is just as common as P0351 — same TSB 08-7-6 coil/boot kit applies, and on this platform plugs and coils are typically replaced as a set because all eight age together.
- 2005-2013GM LS truck V8 cylinder 2 is on the passenger bank at the front and is the most heat-soaked coil on the engine — when one Delphi D585 fails, the rest are usually weeks behind.
- 2007-2013BMW N52/N54 inline-6 cylinder 2 P0352 from failed Eldor red-top coils, same batch-failure pattern as cylinder 1.
- 2007-2014Nissan Altima/Maxima 3.5L VQ35DE cylinder 2 P0352 often traces to valve-cover gasket oil intrusion on the rear bank — rear bank gaskets fail more often than front because of heat.
- 2003-2010Hemi 5.7L cylinder 2 (driver-side front) P0352 from worn coil-on-plug boots cracking under heat — Hemi runs 16 plugs but 8 coils, so each coil fires two cylinders, and a P0352 here can present as misfires on both cylinder 2 and its paired cylinder.
Estimated repair$35 (one coil) to $520 (full coil set + plugs).
Look up another code
P0352 — frequently asked
What does a P0352 code mean?
Coil pack 2 fault.
What causes a P0352 code?
Common causes: Failed coil 2; Wiring; Connector.
What are the symptoms of a P0352 code?
Typical symptoms: Misfire; Check engine light; Rough running.
Is it safe to drive with a P0352 code?
Not for long. Driving on this one risks further damage. Get it to a shop rather than carrying on with it. Estimated repair: $80-$300.
How do I diagnose a P0352 code?
Work from evidence to part, not the other way round. A code names a circuit or a symptom; it does not name the part that failed. 1. Note every code that is set, not just this one. 2. Read the freeze frame — the conditions the fault was recorded under. 3. Confirm the fault is current rather than history. 4. Then work the likely-causes list in the order shown.
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