P0011
Intake camshaft timing ahead of target or slow to respond (bank 1)
Severity: Inspect soonVariable valve timing (VVT) codes
Variable valve timing lets the engine computer shift camshaft timing while driving, using engine oil pressure routed through a control solenoid to a phaser on the camshaft. The computer compares where it wants the camshaft with where the camshaft position sensor says it is. Codes set when the camshaft is out of position, too slow to move, or out of step with the crankshaft.
How these codes differ
- P0010 is an electrical fault in the intake camshaft control solenoid circuit (bank 1): the computer sees a problem with the wiring or the solenoid coil, not with timing itself.
- P0011 (intake) and P0014 (exhaust camshaft B) are performance codes: the circuit is fine but the camshaft did not reach the position the computer asked for. P0012 is the intake version where timing stays too far retarded. These point toward a sticking or clogged solenoid or a phaser problem rather than wiring.
- P0016 and P0017 are correlation codes: they compare the crankshaft sensor with a camshaft sensor (A or B) and say the two shafts are out of their expected relationship. That can be a stretched or jumped timing chain or belt as well as a VVT fault, which is why the regulation requires cam-crank alignment checking on engines with VVT.
- In short: circuit codes send you to wiring and the solenoid, performance codes to oil and the solenoid's movement, and correlation codes to the mechanical timing relationship.
Codes that show up together
- P0011 with P0014 or with P0016: several camshaft-timing codes at once are worth diagnosing together; MOTOR reports camshaft timing codes from clogged solenoid screens, fixed with a new solenoid and an oil change.
- P0016 or P0017 with crankshaft or camshaft sensor codes: fix the sensor circuit first, because a correlation test is only valid when both sensors read correctly.
Variable valve timing (VVT) codes
P0014
Exhaust camshaft timing ahead of target or slow to respond (bank 1)
Severity: Inspect soonP0016
Crankshaft and intake camshaft positions do not agree (bank 1, sensor A)
Severity: Inspect soonP0017
Crankshaft and exhaust camshaft positions do not agree (bank 1, sensor B)
Severity: Inspect soonP0012
Intake camshaft timing behind target (bank 1)
Severity: Inspect soonP0010
Intake camshaft actuator (VVT solenoid) circuit fault, bank 1
Severity: Inspect soonP0008
Engine position system performance, bank 1: the crankshaft-to-camshaft timing relationship has drifted out of range
Severity: Inspect soonP0018
Crankshaft and camshaft positions do not agree on bank 2, sensor A
Severity: Inspect soonP0021
Bank 2 'A' camshaft (usually intake) timing is more advanced than commanded, or the system is not performing
Severity: Inspect soonP0024
Bank 2 'B' camshaft (usually exhaust) timing is more advanced than commanded, or the system is not performing
Severity: Inspect soonP000A
Intake camshaft position slow response, bank 1: the bank 1 intake camshaft takes too long to reach the timing the engine computer commands
Severity: Inspect soonP0013
Exhaust camshaft timing solenoid circuit, bank 1: the engine computer sees an open or faulty circuit to the bank 1 exhaust cam timing solenoid
Severity: Inspect soonP0019
Crankshaft-to-camshaft correlation, bank 2 camshaft B: the bank 2 exhaust camshaft signal is out of step with the crankshaft
Severity: Inspect soonP0022
Intake camshaft timing over-retarded, bank 2: the bank 2 intake camshaft is sitting later than the engine computer commanded
Severity: Inspect soonP3400
Cylinder deactivation system, bank 1: the engine computer sees the hardware that shuts off cylinders on bank 1 not doing what it was told
Severity: Inspect soonP3497
Cylinder deactivation system, bank 2: the engine computer sees the hardware that shuts off cylinders on bank 2 not doing what it was told
Severity: Inspect soonP000B
Exhaust camshaft slow to respond to the computer (bank 1)
Severity: Inspect soonP1061
Jeep: cylinder 1 oil supply solenoid valve stuck
Severity: Inspect soonP2646
Variable valve rocker arm not working as commanded (bank 1)
Severity: Inspect soonP0009
Engine position system performance, bank 2: the crankshaft and bank 2 camshaft timing no longer agree
Severity: Inspect soonP0015
Exhaust camshaft timing too far behind its target (bank 1)
Severity: MonitorP000D
The 'B' camshaft on bank 2 is slow to reach the timing position the engine computer commands
Severity: Inspect soonP000C
Bank 2 intake camshaft slow to reach the position the computer commanded
Severity: Severity not verifiedP0020
Bank 2 intake camshaft position actuator circuit fault
Severity: Inspect soonP0025
Bank 2 exhaust camshaft timing too far retarded
Severity: Severity not verifiedP2645
The engine computer sees an open circuit in the rocker arm actuator A (bank 1)
Severity: Severity not verifiedP2652
Rocker arm oil pressure switch B (bank 1) fault, as Honda describes it
Severity: Inspect soon
Sources and review
- Final Regulation Order: 13 CCR §1968.2, Malfunction and Diagnostic System Requirements (OBD II), 2004 and subsequent model-year passenger cars, light-duty trucks and medium-duty vehicles (2015 amendments)
- 40 CFR §86.1806-04 On-board diagnostics (2011 edition page, includes the end of §86.1806-01(k) malfunction criteria)
- Advanced Engine Performance Specialist Test (L1) Composite Vehicle Type 4 Reference Booklet
- Service Slants: GM Inline Engine Cam Actuator Solenoid
- Last reviewed
- Written by
- Saurabh K.
- Editorial review
- Pending
- Technician review
- Technician review pending
This page explains what a code usually means; it is not a substitute for a professional inspection. How we source and review · Report an error