P1336
FordCrank / Cam Sensor Range / Performance
The engine computer has detected that the crankshaft and camshaft position signals, or their relationship, are outside the expected range. These signals help the computer determine engine speed and valve timing position for ignition and fuel control. The code does not prove that either sensor needs replacement; wiring, signal quality, or mechanical timing can also be involved.
⚠️ Before You Begin (Safety First)
If the engine stalls, runs very poorly, or is difficult to keep running, stop in a safe place and arrange assistance. A stall can leave you without engine power or power steering assist. Avoid driving if the engine repeatedly stalls or the warning is accompanied by severe misfiring.
Common Symptoms
- The warning light may be on with no noticeable change in how the engine runs.
- A rough-running engine or misfire may occur if the computer cannot reliably use the position signals for engine control.
- Hard starting or a no-start condition may occur if the signals are missing or inconsistent.
- The engine may stall if the computer loses usable position information while running.
Common Causes
- A crankshaft or camshaft position sensor may produce an intermittent, weak, or otherwise out-of-range signal.
- Damaged wiring, a poor connection, or corrosion at a sensor connector may disrupt a signal.
- A problem with a signal-generating target or related mechanical component may affect the signal pattern.
- Mechanical valve timing may be out of position, making the crankshaft and camshaft signals inconsistent with each other.
Diagnostic Steps
- Note whether the engine starts and runs normally, and record any other warning lights or symptoms to help guide diagnosis.
- With the engine off and cool, visually inspect accessible crankshaft and camshaft sensor wiring and connectors for damage, loose connections, or corrosion.
- If a connector is visibly loose, make sure the ignition is off before checking that it is seated securely; do not force or probe terminals.
- Check for additional diagnostic codes with a scan tool and record them before clearing anything, since related codes can help distinguish a signal issue from a timing or circuit problem.
- If the code returns or the engine runs poorly, have the signals and mechanical timing checked using procedures for the exact vehicle.
When to Call a Professional
Confirm the code and check for related codes and useful scan data before replacing parts. Inspect the crankshaft and camshaft sensor connectors and wiring, then compare the signal patterns with suitable diagnostic equipment. If the signals and circuits check out, verify mechanical timing using service information for the exact model, year, and engine.
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Commonly Asked Questions
Does P1336 mean the crankshaft or camshaft sensor is bad?
No. It indicates a crank/cam signal range or performance condition. A sensor is one possibility, but wiring, signal-generating components, or mechanical timing can also cause the signals to disagree.
Can I keep driving with P1336?
If the engine runs normally, a short trip to a repair facility may be possible, but the code can be associated with stalling or starting problems. Stop driving if it stalls, runs severely poorly, or cannot be kept running safely.
How is the cause distinguished from a bad sensor?
A technician can inspect the circuits and connectors, assess scan data, and compare crankshaft and camshaft signal patterns. Mechanical timing should also be considered when the signals and wiring do not explain the condition.
Can the code appear without noticeable symptoms?
Yes. The warning light may be the only obvious sign, particularly if the signal issue is intermittent or the engine computer can still operate the engine.
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