P2C07

Code

Generic P — Powertrain

A Camshaft Profile Actuator Position Sensor A Circuit Low Bank 1

Brand: Generic

Type: P — Powertrain

Views: UK: 19 EN: 229 RU: 31

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Page language: EN

Causes

Short to ground on the sensor signal circuit
Open or shorted wiring between sensor and PCM/ECU
Faulty camshaft profile actuator position sensor (low output)
Poor or corroded connector or pin terminal
Low or missing reference voltage or ground at the sensor
Faulty PCM/ECU (rare)

Symptoms

Check engine light (MIL) illuminated
Engine may run rough at idle or during acceleration
Poor fuel economy or hesitation
Possible difficulty starting or stalling (if cam timing is affected)
Stored related misfire or cam/crank correlation codes

What to check

Retrieve freeze frame and live sensor data (cam position values) with a scan tool
Visually inspect sensor connector and wiring for damage, oil, or corrosion
Backprobe sensor connector to measure signal voltage, reference voltage and ground with ignition ON
Check continuity and for short to ground between sensor signal pin and ECU pin
Compare signal to known-good sensor or same-bank sensor (if applicable)
Inspect cam actuator and oil control valve for mechanical binding or oil contamination

Signal parameters

Typical Hall-effect/active position sensor: 0–5 V signal range (varies by manufacturer)
Normal resting/idling signal often between about 0.5–4.5 V depending on position; low fault threshold commonly
Reference voltage typically 5 V (or 3.3 V on some systems); ground ~0 V
If variable reluctance type: AC millivolt signal present while engine cranking/running; very low or 0 mV indicates circuit problem

Diagnostic algorithm

Verify the code and capture freeze-frame/live data with a capable scan tool. Note any related codes (cam/crank correlation).
Visually inspect the sensor, connector, and wiring on bank 1 camshaft actuator for damage, oil intrusion, or corrosion.
With ignition ON (engine off), backprobe the connector: confirm reference voltage (5 V or specified), ground continuity, and signal voltage. Record readings.
If signal is low and reference/ground are good, check continuity between sensor signal pin and ECU input pin; check for short to chassis ground using an ohmmeter.
If signal and wiring check good, start engine and monitor live signal waveform or voltage. Look for noise, dropouts, or no change with cranking/rotation.
If wiring is suspect, repair or replace damaged harness/connector. If wiring is good but signal remains low, replace the camshaft profile actuator position sensor.
If replacing sensor does not clear the fault and wiring is confirmed good, consider ECU input circuit testing or replacement (rare).
After repair, clear codes and perform a functional test/road test while monitoring cam position values to confirm proper operation.

Likely causes

Damaged or chafed wiring harness with insulation rubbed through to chassis ground
Corroded/contaminated connector at the sensor or ECU
Failed position sensor (internal short or N/C output)
Faulty sensor supply (missing 5V reference or ground)

Fault status

⚠️ Status

Camshaft Profile Actuator Position Sensor A Circuit Low (Bank 1) — sensor signal voltage below expected threshold. Causes include short to ground, bad connector, failed sensor, or missing reference/ground.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5-2.0 hours