OBD Codes
Your OBD-II Trouble Codes Repair Site

P000C A Camshaft Position Slow Response Bank 2

OBD-II Trouble Code Technical Description

Article by
Mia B.
ASE Certified Master Technician

A Camshaft Position Slow Response Bank 2

What does that mean?

This generic powertrain diagnostic trouble code (DTC) typically applies to all OBD-II vehicles equipped with variable valve/cam timing. That may include but is not limited to vehicles from Subaru, Dodge, VW, Audi, Jeep, GMC, Chevrolet, Saturn, Chrysler, Ford, etc. Although generic, the exact repair steps may vary depending on make/model.

Many modern vehicles use variable valve timing (VVT) to improve engine performance and fuel economy. In a VVT system, the powertrain control module (PCM) controls solenoid-operated oil control valves. These valves apply oil pressure to an actuator mounted between the camshaft and timing chain sprocket. In turn, the actuator then alters the angular position, or phase change, of the camshaft. A camshaft position sensor is used to monitor camshaft position.

A camshaft position slow response code is set when actual camshaft position does not match the position desired by the PCM during camshaft phase changes.

As it pertains to trouble code descriptions, the "A" indicates the intake, left or front camshaft. On the other hand, "B" indicates the exhaust, right or rear camshaft. Bank 1 is the side of the engine that contains the #1 cylinder, whereas bank 2 is the opposite bank. If the engine is an inline or straight design, there is only one bank.

Code P000C is set when the PCM detects a slow response in camshaft position phase change from bank 2 circuit "A". This code is related to P000A, P000B, and P000D.

What is the severity of this DTC?

The severity of this code is moderate to severe. It's a good idea to address this code as soon as possible.

What are some of the symptoms of the code?

Symptoms of a P000C trouble code may include:

What are some possible causes of the code?

Causes for this code may include:

An example of a camshaft position (CMP) sensor:
P000C Camshaft Position Sensor

What are some P000C troubleshooting steps?

Begin by checking the engine oil level and condition. If the oil is OK, perform a visual inspection of the camshaft position sensor, oil control solenoid, and corresponding wiring. Look for loose connections, damaged wiring, etc. If damage is found, repair as necessary, clear the code and see if it returns. Next, check for technical service bulletins (TSBs) regarding the issue. If nothing is found, you will need to move forward to step-by-step diagnosis of the system.

The following is a generalized procedure, as testing for this code varies between vehicles. To accurately test the system, you'll want to refer to the manufacture's diagnostic flow chart.

Before proceeding, you'll want to consult the factory wiring diagrams to determine which wires are which. Autozone offers free online repair manuals for many vehicles and ALLDATA offers single vehicle subscriptions.

Test The Camshaft Position Sensor

Most camshaft position sensors are either Hall Effect sensors or permanent magnet sensors. A Hall Effect sensor has three wires going to it: reference, signal, and ground. On the other hand, a permanent magnet sensor will only have two wires: signal and ground.

Test The Sensor Circuit

Test The Oil Control Solenoid

Remove the solenoid connector. Use a digital multimeter set to ohms to check the internal resistance of the solenoid. To do this, connect the meter between the solenoid B+ terminal and the solenoid ground terminal. Compare the resistance measurement to the factory repair specifications. If the meter displays a reading out of specification, or out of limits (OL) indicating an open circuit, the solenoid should be replaced. It's also a good idea to remove the solenoid to visually inspect the screen for metal debris.

Check The Oil Control Solenoid Circuit

Check the timing chain and VVT actuators

If everything checks out up to this point, the problem may be with timing chain, corresponding, or VVT actuators. Remove the necessary components to access the timing chain and actuators. Check the chain for excess play, broken guides and/or tensioners. Check the actuators for visible damage, such as worn teeth.

Related P000C DTC Discussions

Need more help with a P000C code?

If you still need help regarding the P000C trouble code, please post your question in our FREE car repair forums.

NOTE: This information is presented for information purposes only. It is not intended as repair advice and we are not responsible for any actions you take on any vehicle. All information on this site is copyright protected.