Crankshaft Position Camshaft Position Correlation Bank 1 Sensor B

Severity

Medium

Can I keep driving?

Usually drivable, but get it diagnosed without delay.

First step

A typical diagnostic sequence used by mechanics, provided here for educational reference only. Diagnostic work should be performed by a qualified mechanic with the appropriate tools and training. 1. Listen for chain rattle on cold start, 5-10 seconds of metallic rattle from the timing case is the classic chain-stretch giveaway 2. Check oil level and condition first, any cam phaser issue is multiplied by poor oil 3. Read live data on cam timing, exhaust cam actual vs commanded values diverging by a few degrees suggests phaser or solenoid; bigger gaps suggest chain 4. Try cleaning or replacing the exhaust-side VVT solenoid as a cheap first move 5. If on a chain-prone engine with high mileage and rattle, plan for chain replacement

PPowertrain
0Generic code
0Fuel / Air
17Sequence number

What does it mean?

The camshaft position sensor (CMP) is used to determine the position of the camshaft(s). It relays this information to the powertrain control module (PCM). The PCM then uses this information to control the fuel injectors, and on some applications, for ignition timing. The crankshaft position sensor (CKP) relays crankshaft position and engine RPM to the PCM, or ignition module.

This information is used but the PCM to control ignition timing, and in some applications, it is also used to control fuel injection. The two common CMP and CKP designs are Hall Effect and permanent magnet. Permanent magnet: creates an AC voltage signal that is proportional to engine speed. A permanent magnet crankshaft sensor Hall Effect: uses a reference voltage from the PCM to produce a DC voltage signal.

A Hall Effect crankshaft sensor Inside the engine, the crankshaft and camshaft are held together by a timing belt or timing chain, which keeps them synchronized. The CKP and CMP sensors work together to keep the PCM informed about engine timing. Should the timing be off, the PCM will set a code P0017. This code stands for Crankshaft Position – Camshaft Position Correlation (Bank 1 Sensor B). The B sensor is likely on the exhaust side.

Symptoms

Likely causes

How to fix it

Codes From the Same System

All Fault Codes

Related Similar Codes

This information follows the generic OBD-II definition and does not replace a vehicle-specific diagnosis. The severity rating is rule-based; an authorised diagnostic reading is required for a definitive answer.