P002F
B Camshaft Profile Control Circuit High Bank 2P002F is a generic OBD-II powertrain diagnostic trouble code: B Camshaft Profile Control Circuit High Bank 2. It is logged by the engine control unit when the ckp/cmp monitor detects that a specific fault threshold has been exceeded — typically resulting in the malfunction-indicator lamp (MIL / check-engine light) being illuminated.
What P002F means
P002F is a generic OBD-II powertrain code set when the Engine Control Module (ECM) detects an abnormally high voltage condition in the 'B' camshaft profile control circuit on Bank 2. Bank 2 is the cylinder bank that does not contain cylinder number 1. The 'B' designation refers to the exhaust camshaft in DOHC engines, mirroring P002C which covers the same fault on Bank 1.
The variable cam profile system switches between low-lift and high-lift camshaft lobes using a hydraulic actuator driven by an electronically commanded oil control solenoid. The ECM monitors the control circuit voltage continuously; if it reads above the expected operating window, it logs P002F. This high-circuit condition is typically caused by a short to the battery voltage supply, an open in the ground return path of the solenoid, or a failed ECM driver holding the line high. With the solenoid unable to be properly commanded, the camshaft profile defaults to a fixed position that can reduce power at certain operating points and increase fuel consumption. Though the vehicle usually remains driveable, the underlying electrical fault should be repaired promptly to avoid progressive VVT actuator wear.
Common causes
Most-frequently reported root causes when P002F is logged.
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1
Short to voltage (B+) in the Bank 2 exhaust camshaft OCS control wire
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2
Open ground return circuit for the oil control solenoid causing voltage to remain high
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3
Defective oil control solenoid with an open or internally damaged coil
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4
Damaged wiring harness where the control wire contacts a battery positive source
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5
Corroded connector pins creating intermittent high-resistance paths that bias the signal high
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6
Contaminated or degraded engine oil affecting solenoid valve movement and back-EMF
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7
ECM solenoid driver circuit failure locking the output in a high state (uncommon)
Symptoms drivers notice
How to diagnose P002F
A typical diagnostic flow when this code is present.
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1
Connect a scan tool and retrieve freeze-frame data; note any companion codes (P002D, P002E, camshaft position codes) to build a complete picture of the fault
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2
Check engine oil level and condition; dark or sludgy oil should be changed before electrical testing as it is a common contributor to VVT solenoid sticking
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3
With ignition on and solenoid connected, back-probe the OCS control terminal — a voltage reading near battery voltage (12–14 V) when the solenoid is not commanded confirms a short to B+
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4
Disconnect the solenoid and recheck the wire voltage; if it drops to 0 V, the short is in the solenoid itself; if voltage remains high, trace the harness for insulation damage contacting B+
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5
Measure solenoid coil resistance with the plug disconnected; an open reading (OL) indicates the coil has failed internally, which can cause the ECM to misread the feedback as a high-voltage event
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6
Inspect the solenoid ground pin and chassis ground integrity using a millivolt drop test; high ground resistance can skew the circuit toward a false high reading
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7
Repair any shorts or open grounds found, clear codes, and validate with a drive cycle that includes varied throttle positions to exercise the cam profile system
Related powertrain codes
- P000A — A Camshaft Position Slow Response Bank 1
- P000B — B Camshaft Position Slow Response Bank 1
- P000C — A Camshaft Position Slow Response Bank 2
- P000D — B Camshaft Position Slow Response Bank 2
- P0010 — A Camshaft Position Actuator Circuit (Bank 1)
- P0011 — A Camshaft Position - Timing Over-Advanced or System Performance (Bank 1)
Frequently asked questions
What is the difference between P002F (Bank 2) and P002C (Bank 1)?
Both codes indicate a high-circuit fault on the 'B' (exhaust) camshaft profile control circuit but on opposite cylinder banks. P002C is Bank 1 (cylinder 1 side) and P002F is Bank 2. If both codes are present simultaneously, suspect a shared power supply wire or a wiring harness issue affecting both banks.
Can a faulty ECM cause P002F?
Yes, but it is rare. If the ECM's internal driver transistor fails in the high (open-drain) state, it will hold the control line high regardless of the commanded duty cycle. This should only be suspected after all wiring, connectors, and the solenoid itself have been thoroughly tested and confirmed good.
How long can I drive with P002F?
The vehicle will typically remain driveable in the short term since the camshaft defaults to a fixed lobe profile. However, continued operation with a shorted wire risks harness damage or heat-related failures, so diagnostics and repair should be completed within a few days.
Does dirty engine oil cause high-circuit codes?
Dirty oil is more directly associated with solenoid sticking and hydraulic faults rather than pure high-voltage circuit codes. However, oil contamination can cause solenoid coil damage over time, and a failed coil (open circuit internally) can produce conditions the ECM interprets as a high-voltage fault.
Disabling P002F in software
RaceTune can permanently disable P002F — and any other OBD-II diagnostic trouble code — on every ECU family we support. The monitor is disabled inside the ECU itself, so the fault stops being logged: the warning light stays off and the engine never enters limp mode for this code. The change is tied to your exact software version.
Software modifications affect emissions compliance and are not road-legal in many jurisdictions. RaceTune service files are intended for motorsport, off-road, and export use.
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