Faulty camshaft position sensor; Damaged or chafed wiring in the cam sensor circuit; Corroded or loose electrical connector at the sensor or PCM; Failed crankshaft position sensor or its circuit affecting synchronization; Mechanical timing issue such as a stretched timing chain or jumped timing belt; PCM software or internal fault (less common)

DTC codes / Ford codes / P1174

P1174 · FordCam Sensor Fault

Q: What does code P1174 mean?

Cam Sensor Fault. P1174 on Ford vehicles indicates the powertrain control module (PCM) has detected a fault in the camshaft position sensor circuit, meaning the signal from the sensor is missing, erratic, or out of expected range. The PCM uses this signal to identify cylinder number one and to sequence fuel injection and ignition timing, so a fault here can disrupt engine synchronization.

P1174 on Ford vehicles indicates the powertrain control module (PCM) has detected a fault in the camshaft position sensor circuit, meaning the signal from the sensor is missing, erratic, or out of expected range. The PCM uses this signal to identify cylinder number one and to sequence fuel injection and ignition timing, so a fault here can disrupt engine synchronization.

SystemPowertrain

Code typeFord specific

SeverityMedium

Fix difficultyIntermediate

AreaFuel and air metering

Symptoms you may notice

Illumination of the check engine light, often with no other noticeable symptoms
Extended cranking before the engine starts or a no-start condition
Rough idle, misfiring, or engine stumble during acceleration
Reduced engine power or limp mode in some driving situations
Poor fuel economy or increased emissions
Intermittent stalling, especially when the engine is cold or under load

Common causes, most likely first

Faulty camshaft position sensor
Damaged or chafed wiring in the cam sensor circuit
Corroded or loose electrical connector at the sensor or PCM
Failed crankshaft position sensor or its circuit affecting synchronization
Mechanical timing issue such as a stretched timing chain or jumped timing belt
PCM software or internal fault (less common)

How to diagnose and fix it

Perform a visual inspection of the cam sensor, connector, and wiring for damage or corrosion
Use a scan tool to check for related codes and view live cam sensor data for erratic or missing signal
Test the cam sensor circuit with a multimeter for power, ground, and signal integrity
Check the crankshaft position sensor and its circuit, as the PCM compares both signals
Verify engine mechanical timing marks align correctly, especially if other symptoms suggest timing issues
Replace the camshaft position sensor if tests confirm it is faulty
Clear codes and perform a road test to verify the repair and ensure the code does not return

Cam sensor code misdiagnosis traps

A P1174 can be set by a failing crankshaft position sensor even when the cam sensor itself tests good, because the PCM relies on both signals for synchronization.
Wiring harness damage near the cam sensor connector is common on older Ford engines due to heat and vibration, and a visual inspection often reveals chafed insulation.
Some Ford models require a relearn procedure after cam sensor replacement, and skipping it can cause the code to reappear immediately.
A stretched timing chain can cause a P1174 without any sensor fault, so always verify mechanical timing if the sensor and wiring check out.
Intermittent P1174 codes that appear only when the engine is cold often point to a failing sensor that tests fine at operating temperature.

Can I keep driving with P1174?

It is generally safe to drive with a P1174 code if the engine runs smoothly, but avoid heavy acceleration or towing until the fault is repaired. If the engine misfires, stalls, or loses power, stop driving and have the vehicle diagnosed promptly to prevent further damage.

Tools that help

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Guidance is general and written for Ford vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.