P0117 on Chrysler
Engine Coolant Temperature Sensor Circuit Low
P0117 on Chrysler vehicles indicates engine coolant temperature sensor circuit low. Au7o has documented this code across 1 Chrysler model — most commonly on Prowler. This code means the engine coolant temperature (ECT) sensor is reading too low a voltage, which the computer interprets as an impossibly high coolant temperature. In most cases this is an electrical fault — such as a short to ground in the wiring — rather than the engine actually overheating. The coolant temperature signal affects fuel mixture, cooling fans, and other functions, so a bad reading can cause poor running, hard starting, or fans running constantly. The fault is usually in the sensor or its wiring. Typical repair costs on Chrysler range from $150 to $600, depending on the specific model and root cause.
Common Causes of P0117
- •Faulty engine coolant temperature sensor
- •Short to ground in the sensor signal wire
- •Damaged or corroded wiring/connector at the sensor
- •Coolant contamination affecting the sensor
- •Poor electrical ground
- •Faulty PCM/ECM (less common)
P0117 on Chrysler by Model
Chrysler Prowler(1 issue)
- 3.5L V6 Coolant Crossover Tube Leak1999-2002
The Chrysler 3.5L V6 engine in the Prowler uses aluminum coolant crossover tubes that develop leaks at the O-ring seals and crimped connections. The crossover tubes run across the top of the engine between the cylinder heads and are exposed to high heat. The O-rings harden and shrink, allowing coolant to seep. The Prowler's unique front-end design with exposed engine makes the leak visible but also means the engine compartment lacks the heat shielding of a conventional car.
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View P0117 across all makes →Frequently Asked Questions
What does P0117 mean on Chrysler?▼
P0117 stands for "Engine Coolant Temperature Sensor Circuit Low." This code means the engine coolant temperature (ECT) sensor is reading too low a voltage, which the computer interprets as an impossibly high coolant temperature. In most cases this is an electrical fault — such as a short to ground in the wiring — rather than the engine actually overheating. The coolant temperature signal affects fuel mixture, cooling fans, and other functions, so a bad reading can cause poor running, hard starting, or fans running constantly. The fault is usually in the sensor or its wiring. On Chrysler specifically, this code is documented across 1 model.
What causes P0117 on Chrysler vehicles?▼
Common causes on Chrysler: Faulty engine coolant temperature sensor, Short to ground in the sensor signal wire, Damaged or corroded wiring/connector at the sensor, Coolant contamination affecting the sensor, Poor electrical ground. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0117 on a Chrysler?▼
Repair costs on Chrysler range from $150 to $600, depending on the specific model and root cause.
Which Chrysler models have P0117 documented?▼
Au7o has documented P0117 on 1 Chrysler model: Prowler.