P001F
A Camshaft Profile Control Circuit High Bank 2P001F is a generic OBD-II powertrain diagnostic trouble code: A 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 P001F means
P001F is a generic OBD-II powertrain code indicating that the PCM has detected an abnormally high voltage condition in the "A" Camshaft Profile Control Circuit on Bank 2. Bank 2 is the cylinder bank that does not contain cylinder number one, found on V-type and opposed-cylinder engines. The "A" designation refers specifically to the intake camshaft on that bank. Modern engines use electronically controlled camshaft profile switching — via VVT solenoids or Valvetronic-style actuators — to vary valve timing and lift for improved power, efficiency, and emissions. The PCM monitors return signal voltages from the actuator circuit; if the voltage exceeds the upper threshold, P001F is stored and the MIL illuminates. A high-circuit condition most commonly points to a short to voltage in the wiring harness, a failed actuator producing elevated back-EMF, or a sensor feedback line that has been bridged to a higher-voltage source. While P001F is the Bank 2 counterpart of P001C, both codes demand the same systematic diagnosis: start with oil condition and level, then proceed through electrical inspection and component testing. Early diagnosis is advisable because sustained incorrect cam timing elevates engine emissions, reduces efficiency, and can eventually accelerate wear on cam phaser internals and timing chain components.
Common causes
Most-frequently reported root causes when P001F is logged.
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1
Short to voltage in the Bank 2 camshaft profile control circuit wiring harness
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2
Faulty VVT solenoid or Valvetronic motor on Bank 2 producing excessive voltage feedback
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3
Corroded or damaged connector creating an unintended voltage path in the Bank 2 actuator circuit
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4
Defective camshaft position sensor on Bank 2 supplying a high-signal voltage to the PCM
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5
Low engine oil level or degraded oil reducing cam phaser response and causing anomalous feedback
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6
Timing chain stretch or tensioner failure affecting cam position sensor correlation on Bank 2
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7
PCM/ECM internal fault affecting Bank 2 circuit monitoring (rare)
Symptoms drivers notice
How to diagnose P001F
A typical diagnostic flow when this code is present.
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1
Retrieve all stored codes and freeze-frame data with an OBD-II scanner; note any companion Bank 2 sensor or timing codes
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2
Inspect engine oil level and condition; replace if degraded or below the minimum mark using the correct viscosity
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3
Visually trace the Bank 2 camshaft profile control wiring harness looking for insulation damage, rubbing against hot surfaces, or contact with voltage sources
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4
Use a multimeter to measure circuit voltage at the actuator connector and compare against manufacturer specification for the high limit
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5
Test the VVT solenoid coil resistance on Bank 2; values outside specification suggest internal failure
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6
Inspect the Bank 2 camshaft position sensor and its connector for damage or shorts to neighbouring wiring
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7
Clear codes after any repairs, perform a test drive with live cam-timing data monitored, and verify P001F does not return
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
Is P001F the same fault as P001C but on the other bank?
Yes. P001C and P001F describe the identical high-voltage circuit fault type — one on Bank 1 and one on Bank 2 respectively. Diagnosis procedures are the same; the only difference is which bank's wiring, solenoid, and cam position sensor you inspect first.
Can P001F appear alongside P001C?
Yes. If a systemic issue affects both banks — such as incorrect oil viscosity degrading both cam phasers, or a PCM fault affecting both drive circuits — both P001C and P001F can be set simultaneously. Address shared root causes (oil, power supply) first before pursuing bank-specific repairs.
How urgent is P001F compared to other cam timing codes?
P001F is a non-critical fault in the sense that the engine will typically still run, but it should not be dismissed. Operating with sustained incorrect cam timing increases emissions, reduces efficiency, and can accelerate wear on cam phaser internals and timing chain hardware over time.
Can a stretched timing chain cause P001F?
A stretched timing chain can cause the camshaft position to deviate from commanded values, which the PCM may interpret as an actuator circuit fault. If P001F appears together with timing-related codes or rattling noises from the timing cover, inspect the chain, tensioner, and guides for wear before replacing the solenoid.
Disabling P001F in software
RaceTune can permanently disable P001F — 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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