P2088 to P2095 and P2645 to P2664: camshaft actuator and rocker arm actuator circuits
The control circuit of a camshaft position actuator (A or B, bank 1 or 2) reads low or high, or a rocker arm actuator (A or B) has a circuit fault, is stuck on or off, or performs poorly.
SeverityModerateUsually not urgent today, but it can get worse if left.
Can you keep driving?Drive gently, check it soonWhat does P2088 mean?
These codes concern the actuators that change the valve timing or lift. A camshaft position actuator shifts a camshaft against the crankshaft, like the solenoids in P0010 to P0014. A rocker arm actuator switches between two cam profiles or two lifts, a system some makers use to give the engine one character at low speed and another at high speed. When one fails, the engine stays on one profile, usually the gentler one, so it pulls less hard at high revs or idles rougher.
What causes P2088?
- Low or dirty engine oil, which these hydraulic systems depend on
- A failed actuator solenoid or a damaged wire to it
- Oil that has wicked into the connector
- A blocked oil screen feeding the actuator
- Wear in the switching rocker arms or the cam phaser
What to check first for P2088
- Check the oil level and grade, and when it was last changed
- Measure the actuator solenoid's resistance and inspect its connector
- Have the actuator commanded with a scan tool while watching whether the engine responds
- Ask about known oil screen or rocker arm issues for the engine
Can you drive with P2088?
Usually you can drive to a workshop. Expect less power at high revs or rougher running; if the engine rattles or the oil warning comes on, stop and have it checked before going further.
Since May 2018 an engine warning light that stays on is a major defect at the MOT, so the car fails until the fault is fixed.
Codes on this page
28
- P2088"A" Camshaft Position Actuator Control Circuit LowBank 1
- P2089"A" Camshaft Position Actuator Control Circuit HighBank 1
- P2090"B" Camshaft Position Actuator Control Circuit LowBank 1
- P2091"B" Camshaft Position Actuator Control Circuit HighBank 1
- P2092"A" Camshaft Position Actuator Control Circuit LowBank 2
- P2093"A" Camshaft Position Actuator Control Circuit HighBank 2
- P2094"B" Camshaft Position Actuator Control Circuit LowBank 2
- P2095"B" Camshaft Position Actuator Control Circuit HighBank 2
- P2645"A" Rocker Arm Actuator Control Circuit/OpenBank 1
- P2646"A" Rocker Arm Actuator System Performance or Stuck OffBank 1
- P2647"A" Rocker Arm Actuator System Stuck OnBank 1
- P2648"A" Rocker Arm Actuator Control Circuit LowBank 1
- P2649"A" Rocker Arm Actuator Control Circuit HighBank 1
- P2650"B" Rocker Arm Actuator Control Circuit/OpenBank 1
- P2651"B" Rocker Arm Actuator System Performance or Stuck OffBank 1
- P2652"B" Rocker Arm Actuator System Stuck OnBank 1
- P2653"B" Rocker Arm Actuator Control Circuit LowBank 1
- P2654"B" Rocker Arm Actuator Control Circuit HighBank 1
- P2655"A" Rocker Arm Actuator Control Circuit/OpenBank 2
- P2656"A" Rocker Arm Actuator System Performance or Stuck Off
- P2657"A" Rocker Arm Actuator System Stuck OnBank 2
- P2658"A" Rocker Arm Actuator Control Circuit LowBank 2
- P2659"A" Rocker Arm Actuator Control Circuit HighBank 2
- P2660"B" Rocker Arm Actuator Control Circuit/OpenBank 2
- P2661"B" Rocker Arm Actuator System Performance or Stuck OffBank 2
- P2662"B" Rocker Arm Actuator System Stuck OnBank 2
- P2663"B" Rocker Arm Actuator Control Circuit LowBank 2
- P2664"B" Rocker Arm Actuator Control Circuit HighBank 2
Related codes
Checked on · Rafael Soares
These are the generic meanings every manufacturer shares. Each brand adds its own detail, so your car's handbook, its service information and a qualified mechanic have the last word. OdoKeep has no connection with any manufacturer, and the app does not read codes from the car.
