Check Engine Light P0014: What the Code Means and What to Do Next

The Short Answer

If your check engine light is on and a scan tool shows P0014, the engine control module (ECM) has detected that the 'B' camshaft on bank 1 is more advanced than it commanded, or that the camshaft is not responding to timing changes as expected. The generic OBD-II definition is "B" Camshaft Position – Timing Over-Advanced or System Performance (Bank 1). The code applies to engines with variable valve timing (VVT), where the ECM uses engine oil pressure to rotate a camshaft relative to the crankshaft.

P0014 identifies a timing mismatch. It does not name a failed part. The cause can be as simple as low or dirty oil, or as serious as a worn timing chain. Diagnose it before replacing parts.

Decoding the Terms

Bank 1: the side of the engine that contains cylinder 1. On an inline engine there is only one bank. On a V engine, the location of bank 1 depends on the manufacturer. "B" camshaft: on many engines this is the exhaust camshaft, but some manufacturers assign the letter differently, such as to the right or rear camshaft. Check the service information for your specific engine. Timing over-advanced: the camshaft's actual position is ahead of the target position the ECM requested, beyond the allowed tolerance. System performance: the camshaft is not tracking commanded changes within the expected range or time.

What About "Cold Start B Camshaft Position Timing Over-Advanced Bank 1"?

That wording describes a separate, cold-start-specific code, not P0014 itself. The SAE code list contains a group of cold-start camshaft timing codes in the P052x range. They cover the same kind of fault, but only while the engine is warming up after a cold start. If your scan tool shows the cold-start wording, record the exact code number and look up its definition for your vehicle. Some causes overlap with P0014, but the conditions under which the fault sets are different.

Common Causes

The causes below are commonly associated with P0014 across many vehicles. Which ones are most likely varies by make, engine, model year and mileage, and no model-specific failure data was available for this article.

Low oil level, the wrong oil viscosity, or old and sludged oil. Variable cam timing depends on clean oil at the correct pressure. A sticking or failed oil control valve, also called the VVT solenoid, for the bank 1 'B' camshaft. A clogged screen or filter in the oil control valve's oil passage, on engines that use one. A cam phaser that is stuck, worn or not locking correctly. A stretched timing chain, worn guides or tensioner, or timing that was set incorrectly during a previous repair. Damaged wiring or connectors in the oil control valve or camshaft position sensor circuits. Less commonly, a faulty camshaft position sensor, or an ECM software issue addressed by a manufacturer service bulletin.

Symptoms You May Notice

Illuminated check engine light, sometimes with no other noticeable change. Rough or unstable idle, or occasional stalling. Hard starting. Reduced power or hesitation. Lower fuel economy. Rattling at startup on some engines, which can point toward a phaser or timing chain problem.

Is It Safe to Keep Driving?

Many vehicles with P0014 can be driven for a short time, but the code should not be ignored. If the cause is oil-related, continued driving can cause more wear. If the cause is a stretched or jumped timing chain, the engine could suffer serious damage, particularly on interference engines, where valves and pistons can collide. If the engine runs roughly, stalls, makes new noises, or shows a low oil pressure warning, stop driving and have it inspected.

Sensible Next Steps

Check the oil level and condition first. Top up or change the oil using the grade specified in the owner's manual. Record the freeze-frame data and any other stored codes. Related codes, such as other camshaft timing codes or camshaft/crankshaft correlation codes, help narrow down the cause. Inspect the wiring and connectors at the bank 1 'B' oil control valve and camshaft sensor. If you have access to a capable scan tool, compare the commanded and actual camshaft position, and actuate the oil control valve if the tool supports it. Check for technical service bulletins or software updates for your exact vehicle. If the code returns after these basic checks, have a technician check cam-to-crank correlation and timing chain condition before replacing parts.

Gaps in This Guide

This guide covers the generic meaning of P0014. It does not include model-specific data, such as which camshaft 'B' refers to on a particular engine, known failure patterns for specific makes or model years, applicable service bulletins, or repair costs. Use the factory service information for your vehicle, or a qualified technician, to fill in those details.