P1176

Code

Other P — Powertrain

Cam Calibration Fault

Brand: Other

Type: P — Powertrain

Views: UK: 29 EN: 58 RU: 27

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Page language: EN

Causes

Incorrect camshaft-to-crankshaft timing (timing chain/belt jump or stretched)
Faulty camshaft position sensor or sensor circuit (open, short, poor reference)
Sticking or failed VVT/cam phaser or oil control valve (solenoid)
Low or contaminated engine oil (affecting VVT operation)
Damaged wiring or poor connector at sensor/solenoid
ECM software or internal fault

Symptoms

Check Engine Light (MIL) illuminated
Rough idle or intermittent misfire
Poor acceleration, reduced power or limp-home mode
Increased fuel consumption
Hard starting or stalling in severe cases
Noise from timing cover area if mechanical timing issue present

What to check

Read and record freeze frame data and all stored codes (look for related cam/crank/VVT codes)
Inspect engine oil level, condition and service history
Visually inspect cam sensor and VVT solenoid connectors and wiring for damage or corrosion
Check for oil leaks around VVT solenoid and phaser area
Perform a scan tool live-data check of camshaft and crankshaft position signals and correlation
Listen for unusual noises from timing chain/belt area

Signal parameters

Camshaft position sensor signal: typically 0–5 V square wave or VR waveform; stable pulses at cranking and idle
Crankshaft position sensor signal: stable reference waveform; cam/crank phase correlation should be within manufacturer degrees
VVT solenoid activation: commanded duty cycle 0–100% (varies by vehicle); solenoid coil resistance per manufacturer spec
Cam vs crank correlation: should not show sudden large phase offsets or intermittent loss of correlation

Diagnostic algorithm

Retrieve freeze frame and note engine conditions when code set (rpm, temp, load). Scan for related codes (P00xx, P00xx, P0340 series, P0011/P0014 etc.).
Check and correct engine oil level and condition if low/dirty. Replace oil and filter if contaminated or overdue.
Visually inspect camshaft position sensor, VVT solenoid, connectors and wiring for damage, corrosion, or loose pins. Repair as needed.
Using a scan tool, monitor camshaft and crankshaft position signals and cam/crank correlation while cranking and at idle. Look for missing pulses, noise, or intermittent signals.
If available, use an oscilloscope to compare cam and crank waveforms for correct amplitude, shape and phase relationship.
Test the VVT solenoid: measure coil resistance, apply battery voltage per service procedure (or command via scan tool) and verify oil flow/operation. Replace if stuck or out of spec.
Check timing components: inspect timing chain/belt tensioner, guides, sprockets, and confirm timing marks/relationship. Repair or replace if chain/belt has jumped or worn.
Inspect cam phaser for mechanical play or damage. Replace phaser if mechanically failed.
Repair wiring or sensor faults found. After repairs, clear codes and perform cam/crank relearn or calibration procedure per manufacturer (if required).
Confirm repair with test drive and re-scan for reappearance of code and for readiness monitors.

Likely causes

VVT solenoid stuck or leaking causing incorrect cam phaser position
Camshaft position sensor producing intermittent or incorrect signal
Timing chain has jumped a tooth or has excessive wear
Low engine oil level or oil pressure preventing cam phaser movement
Connector corrosion or damaged sensor wiring

Fault status

⚠️ Status

MIL illuminated (Check Engine Light ON). Code indicates camshaft position/phasing calibration fault; driveability or readiness monitors may be affected.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1–3 hours