Powertrain, generic · Fuel and air metering, auxiliary emission controls

P0017 Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor B)

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modeNo

The engine control module checks whether the signal of the exhaust camshaft on bank 1 (sensor B) arrives at the expected crankshaft position, usually while the camshaft phaser is in its rest position. P0017 is set when the deviation stays outside a calibrated window. The camshaft is then out of step with the crankshaft: a timing belt or chain has jumped a tooth, the chain is stretched, the phaser is stuck at an end stop, or a reluctor wheel has slipped. On engines with a single camshaft, sensor A is simply the only camshaft sensor.

Likely causes

Timing chain stretched, or belt or chain jumped a tooth
Camshaft phaser stuck at an end stop, oil control valve or oil pressure faulty
Incorrect assembly after a belt or chain replacement
Camshaft or crankshaft sensor signal disturbed
Reluctor wheel on crankshaft or camshaft slipped

Symptoms

  • Check engine light on
  • Long cranking or hard starting
  • Rough idle and loss of power
  • Chain rattle at cold start on chain-driven engines
  • Risk of valve damage on interference engines if the timing has jumped

Repair estimate

DifficultyHardWorkshop job
Parts and labour€60–4,000
Time0–20 h

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

What to check first

  1. Check correlation data
  2. Inspect timing chain and tensioner
  3. Verify timing marks after any recent repair

Parts involved

timing chaintiming beltcam phaser exhaust bank1camshaft position sensorcrankshaft position sensor

Related codes

P0016P0018P0019P0008P0014P0335P0365

References: law.cornell.edu, gsi.ext.gm.com, saabwisonline.com, static.nhtsa.gov.