P1391 on Dodge
Loss of Cam/Crank Position Sensor Signal — Intermittent Condition
P1391 on Dodge vehicles indicates loss of cam/crank position sensor signal — intermittent condition. Au7o has documented this code across 1 Dodge model — most commonly on Intrepid. P1391 is a manufacturer-specific code used primarily by Chrysler, Dodge, and Jeep indicating an intermittent loss of signal from the camshaft position (CMP) sensor or crankshaft position (CKP) sensor. The PCM uses these signals to determine engine timing for ignition and fuel injection, so a dropout can cause hesitation, stalling, or a no-start condition. Note that on a few other makes (e.g., some Chevrolet/GM applications) P1391 can instead refer to a wheel-speed/G-sensor circuit fault. Typical repair costs on Dodge range from $100 to $300, depending on the specific model and root cause.
Common Causes of P1391
- •Failing crankshaft position (CKP) sensor — often drops out when hot, then recovers when cool
- •Failing or intermittent camshaft position (CMP) sensor
- •Damaged, corroded, or loose sensor wiring/connectors or a poor ground
- •Low-quality aftermarket (non-OEM) cam/crank sensor causing the code to return after repair
- •Damaged tone/reluctor wheel teeth on the crankshaft, camshaft, or flexplate
- •Intermittent open or short in the sensor signal circuit to the PCM
P1391 on Dodge by Model
Dodge Intrepid(1 issue)
- Camshaft/Crankshaft Position Sensor Failure — Intermittent Stalling and No-Start1993-2004
The Hall-effect camshaft and crankshaft position sensors (and their connectors) on Intrepid engines degrade with heat and fail intermittently, cutting spark and fuel without warning. Owners report sudden stalling while driving, engines that die after warming up and restart once cooled, and intermittent crank-but-no-start conditions. Chrysler addressed start/stall and no-start conditions in service bulletin coverage (SB 195966, May 1999), and the same defect is documented across the LH platform including the Chrysler Concorde.
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View P1391 across all makes →Frequently Asked Questions
What does P1391 mean on Dodge?▼
P1391 stands for "Loss of Cam/Crank Position Sensor Signal — Intermittent Condition." P1391 is a manufacturer-specific code used primarily by Chrysler, Dodge, and Jeep indicating an intermittent loss of signal from the camshaft position (CMP) sensor or crankshaft position (CKP) sensor. The PCM uses these signals to determine engine timing for ignition and fuel injection, so a dropout can cause hesitation, stalling, or a no-start condition. Note that on a few other makes (e.g., some Chevrolet/GM applications) P1391 can instead refer to a wheel-speed/G-sensor circuit fault. On Dodge specifically, this code is documented across 1 model.
What causes P1391 on Dodge vehicles?▼
Common causes on Dodge: Failing crankshaft position (CKP) sensor — often drops out when hot, then recovers when cool, Failing or intermittent camshaft position (CMP) sensor, Damaged, corroded, or loose sensor wiring/connectors or a poor ground, Low-quality aftermarket (non-OEM) cam/crank sensor causing the code to return after repair, Damaged tone/reluctor wheel teeth on the crankshaft, camshaft, or flexplate. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P1391 on a Dodge?▼
Repair costs on Dodge range from $100 to $300, depending on the specific model and root cause.
Which Dodge models have P1391 documented?▼
Au7o has documented P1391 on 1 Dodge model: Intrepid.