P2088 - "A" CAMSHAFT POSITION ACTUATOR CONTROL CIRCUIT LOW BANK 1

The camshaft actuator control circuit monitors the variations that occur between the camshaft and crankshaft. These variations are then sent in a corresponding signal to the Powertrain Control Module (PCM). To accomplish this process, the Camshaft Position Sensor (CMP) and Crankshaft Position Sensor (CKP) are used to convert the varying degrees that exist between the camshaft and crankshaft into an electrical signal that is used by the car’s computer to optimize engine timing and performance.

When diagnostic code P2088 OBD2 is stored, it means that the camshaft position actuator controller circuit “A”, located on bank 1, has a low electrical condition.

• Check Engine light illumination.
• Rough engine operation.
• Reduced engine performance.
• Increased fuel consumption.

The reasons for the P2088 OBDII fault code being set are:

• The timing chain/belt could have wear.
• The variable camshaft timing solenoid may be in poor condition.
• The variable valve timing actuator may be defective.
• The engine oil level may be excessively low.
• The circuit may have a blown fuse.
• Timing components may be misaligned.
• System wires or connectors are damaged.

To correct the OBD2 DTC P2088 faults you should do the following:

• Before proceeding with any diagnosis, it is recommended to consult the Technical Service Bulletins (TSB) available for your vehicle.
• Verify that the condition and level of the engine oil meet the requirements for a good operation of the system.
• Check all wiring and connectors for damage. You should repair or replace any of these components that are corroded, worn, or burned.
• Use a multimeter to perform continuity tests on all wires. Compare the readings obtained with the references given by the manufacturer. Also, verify that the CMP Sensor and CKP Sensor have the reference voltage specified in the user's manual. Repair or replace as necessary.
• Check that the timing chain or belt and gears are in optimum condition for proper operation. Replace if the chain is stretched or if there is wear on the gears. Note that if this code is set after replacing one of these timing components, it may be due to the misalignment of these components.
• Replace the variable camshaft timing solenoid.