P2088: Camshaft position actuator A control circuit low (bank 1)
The ECU sees too low a voltage at the solenoid that drives the camshaft A timing actuator. Wiring, a connector or the solenoid is the usual cause.
| Code | P2088 |
|---|---|
| System | Engine and transmission |
| Group | P20xx, Emissions: catalysts and AdBlue |
| Type | Generic: it means the same on every make |
| Can you keep driving? | With care |
What P2088 means
Variable valve timing advances or retards the camshaft for more pulling power and lower fuel use. Oil pressure moves it, directed by a solenoid valve controlled by the ECU. Here the solenoid circuit shows a voltage below the possible range, almost always due to an electrical problem. Camshaft A is usually the intake camshaft, although each manufacturer defines it.
Most common causes
- Timing solenoid connector loose, oily or corroded
- Solenoid wire shorted to earth or broken
- Missing solenoid supply (fuse or relay)
- Timing solenoid with an internal short
- Engine ECU fault (rare)
Symptoms
- Engine warning light on
- Rough or slightly unstable idle
- Less power and lazier response
- Slightly higher fuel use
Can you drive with P2088?
With care You can drive with care, though the engine will perform worse; do not leave it long, as the timing is working away from its ideal point. Get it checked soon.
Open the bonnetthe in-depth explanation
How to check it
Find the timing solenoid, usually at the front of the cylinder head, and check that the connector has no oil inside and no green pins. With live data, compare the commanded and actual cam angle.
How to read and clear P2088 with Final OBD
Plug an OBD2 scanner in under the steering wheel, switch the ignition on and open Final OBD. Under Faults you’ll see P2088 with its description and whether it’s confirmed, pending or permanent.
If the engine stores it over standard OBD, with FREE you read this code with its explanation for nothing and clear it. With PRO you also read the faults of every control unit and clear them in all of them.
Clearing the code only turns the light off: if the cause is still there, it comes back. Clear it once it’s fixed, and not right before an inspection. It’s all in how to read and clear fault codes and in inspections and OBD.
Similar codes
- P2084 Exhaust gas temperature sensor reading out of range (bank 1, sensor 2)
- P2085 The exhaust gas temperature sensor (bank 1, sensor 2) fails now and then
- P2086 The exhaust gas temperature sensor (bank 2
- P2087 The exhaust gas temperature sensor (bank 2, sensor 2) fails now and then
- P2089 Camshaft actuator A control circuit high (bank 1)
- P208A The AdBlue pump control has a broken or disconnected wire
- P208B The AdBlue pump control gives readings outside the normal range
- P208C The AdBlue pump control gives a lower signal than normal
- P2002 Diesel particulate filter efficiency below threshold (bank 1)
- P2003 Diesel particulate filter efficiency below threshold (bank 2)
- P2004 Intake manifold runner control stuck open (bank 1)
- P2005 Intake manifold runner control stuck open (bank 2)
What does code P2088 mean?
Variable valve timing advances or retards the camshaft for more pulling power and lower fuel use. Oil pressure moves it, directed by a solenoid valve controlled by the ECU. Here the solenoid circuit shows a voltage below the possible range, almost always due to an electrical problem. Camshaft A is usually the intake camshaft, although each manufacturer defines it.
Can you drive with P2088?
You can drive with care, though the engine will perform worse; do not leave it long, as the timing is working away from its ideal point. Get it checked soon.
How do you clear P2088?
With an OBD2 scanner and an app like Final OBD, which clears it for free if it’s stored by the engine control unit. But clearing it only turns the light off: if the cause isn’t fixed, P2088 comes back.
Read it on your car
Final OBD reads and clears engine faults through standard OBD for free, each one explained in plain English. With PRO it also reads the faults of every control unit, each make’s own codes included, and clears them in all of them.
