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P1341 Manufacturer-specific Basic entry

Persistent Misfire

Updated 2026-10-10 · Manufacturer-specific powertrain

Severity
High
Typical repair cost
60 – 900 EUR
System
Powertrain

This is a manufacturer-specific code. Its exact meaning can differ between makes; the definition below follows the most common usage.

What it means

P1341 is stored when the crankshaft sensor detects the small speed drops that occur when a cylinder fails to fire. The misfire counter for Persistent Misfire exceeded the threshold within the monitored period.

This entry is compiled automatically from the standard definition and typical diagnostic practice for this type of fault. A detailed, reviewed article is in preparation.

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Symptoms

  • Check engine light on
  • Rough or unstable idle
  • Hesitation or poor acceleration
  • Increased fuel consumption
  • Possible limp mode with reduced power

Common causes

  1. Worn spark plugs or a failing ignition coil
  2. Clogged or leaking fuel injector
  3. Vacuum leak at the intake manifold or gaskets
  4. Low compression: valve, piston ring or head gasket problem
  5. Faulty crankshaft or camshaft sensor giving false misfire counts

How to diagnose

  1. Read misfire counters per cylinder with a scan tool to confirm which cylinder is affected
  2. Inspect the spark plug for wear, fouling and correct gap
  3. Swap the ignition coil with a neighbouring cylinder and check whether the misfire follows
  4. Check injector operation (noise, resistance, balance test) and fuel pressure
  5. Perform a compression or leak-down test if ignition and fuel are good
  6. Smoke test the intake for vacuum leaks

Frequently asked questions

Can I keep driving with P1341?

Not for long. This code can lead to expensive follow-up damage or affects safety systems; have it checked as soon as possible.

Will clearing P1341 fix it?

No. Clearing only erases the stored code; it returns as soon as the monitor runs again unless the cause is repaired.

Related codes

P1340

Nearby codes in this group