P0336 - Crankshaft Position Sensor (CKP) 'A' Range/Performance
System
Powertrain (Engine & Gearbox)
Technical Description
The control module has detected a fault in the Crankshaft Position Sensor (CKP) 'A' Range/Performance (P0336). The reported signal is electrically valid but disagrees with other operating parameters (RPM, load, or other sensors).
Multimeter Test Points & Nominal Values
| Test Point / Component | Measurement | Nominal Target Range | Test Condition |
|---|---|---|---|
| Crankshaft Position Sensor (CKP) 'A' Range/Performance – Coil Resistance | Resistance (Ω) | 200 - 1800 Ω (typically 500 - 1200 Ω) | Sensor disconnected at 20°C |
| Crankshaft Position Sensor (CKP) 'A' Range/Performance – Output (AC Voltage) | Voltage (V) | 0.5 - 2.0 V AC at cranking, rising with RPM | During cranking / engine running |
| Insulation Resistance to Ground | Resistance (MΩ) | > 20 MΩ | Sensor pin to chassis ground |
Sensor disconnected at 20°C
During cranking / engine running
Sensor pin to chassis ground
Oscilloscope Waveform Analysis
2 ms/div, 2 V/divPossible Causes
Crankshaft Position Sensor (CKP) 'A' Range/Performance is electrically operational but performing outside calibrated tolerance
Channel A:Verify dedicated wiring pins and signal pair for circuit A against the schematic.
Chafed or pinched wiring harness along the signal path to Crankshaft Position Sensor (CKP) 'A' Range/Performance
Poor ground connection or excessive voltage drop (> 0.1 V) at the ground point for Crankshaft Position Sensor (CKP) 'A' Range/Performance
Defective internal output driver or reference circuit in the control module for Crankshaft Position Sensor (CKP) 'A' Range/Performance
Symptoms
4
Recommended Solution
Compare signal voltage and resistance between circuit A and companion circuit B at module connector.
Log component live data across varying load points and verify plausibility against engine target model.
Verify loaded supply voltage and harness terminal pins at Crankshaft Position Sensor (CKP) 'A' Range/Performance.
Check circuit continuity and ground-side voltage drop (< 0.05 V) for Crankshaft Position Sensor (CKP) 'A' Range/Performance.
Scope the signal trace during cranking to verify symmetric sine peaks without missing or deformed teeth.
Mechanic's Tip
Inductive VR sensors often test fine cold but develop an open circuit when engine heat expands the internal fine windings. Gently warm the sensor with a heat gun while monitoring resistance to expose thermal open circuits.