Crankshaft position sensor codes

How its codes differ

• P0335 is the crankshaft sensor circuit code: without a usable signal the engine may stall or not start.
• P0016 and P0017 compare the crankshaft with a camshaft; a crankshaft sensor fault can upset that comparison, so fix a crankshaft sensor code first.
• Because the misfire monitor relies on crankshaft speed, a faulty crankshaft signal can also show up as misfire.

Codes

• P0335

  Crankshaft position sensor A circuit fault

  Severity: Inspect soon

• P0016

  Crankshaft and intake camshaft positions do not agree (bank 1, sensor A)

  Severity: Inspect soon

• P0017

  Crankshaft and exhaust camshaft positions do not agree (bank 1, sensor B)

  Severity: Inspect soon

Signs it's failing

• Engine cranks but will not start
• Stalling while driving
• Misfire or rough running
• Check engine light

How to test it

1. Inspect the sensor's connector and wiring for damage or oil contamination. (Use caution)

   Warning: Do this with the engine off and cool; the sensor is often near the exhaust or moving parts.

2. Signal testing and replacement usually need service information and access under the car; have a shop do it. (Best left to a shop)

   Warning: Never work under a car held up only by a jack.

After the repair

• Clear codes and confirm reliable starting.
• Check misfire counters and correlation codes after a drive.
• Clear codes only after the repair, then drive normally over several days with both city and highway driving so the readiness monitors can complete; clearing codes or disconnecting the battery resets them to not ready, which fails an emissions test.