Powertrain, generic · Ignition system or misfire

P0341 Camshaft Position Sensor A Circuit Range/Performance Bank 1 or Single Sensor

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

P0341 means the intake camshaft sensor of bank 1 (or the only cam sensor) delivers pulses, but their number or pattern does not fit the crankshaft. GM counts the pulses while the crank is in sync: 4 to 6 in the first 12 reference events and 398 to 402 per 100 engine cycles on the 4X wheel of the cam phaser; outside that in 8 of 10 checks the code is set after two trips. Ford's 2023 diesel compares the detected segment profile of the cam wheel with the expected one (1.2 s); the Saab 9-4X V6 checks pulses per crank revolution and correlation with crank position. Ford petrol engines use P0344 instead. Result: cam phase uncertain, cam timing switched off, possibly hard starting. GM names corroded connectors at the timing cover as a sporadic cause (PIP5335C).

Likely causes

Sensor with interference pulses or weak signal, air gap
Tone wheel on the phaser damaged or wrongly fitted
Connector or wiring fault (corrosion, interference)
Crankshaft signal disturbed (wrong reference)

Symptoms

  • Check engine light on
  • Longer cranking before the engine starts
  • Loss of power (cam timing held in its base position)
  • Rough idle, occasionally stalling

Repair estimate

DifficultyMediumDIY possible
Parts and labour€40–500
Time0.3–3 h

Typical range across vehicles; the real cost depends on what the testing finds.

What to check first

  1. Check connector
  2. Check cam/crank correlation
  3. Inspect timing components

Parts involved

camshaft position sensorcamshaft tone wheelsensor wiringengine control modulecam phaser intake bank1

Related codes

P0340P0344P0346P0016P0366

References: gsi.ext.gm.com, fordservicecontent.com, saabwisonline.com, static.nhtsa.gov.