P00B7 on Jeep
Engine Coolant Flow Low/Performance
P00B7 on Jeep vehicles indicates engine coolant flow low/performance. Au7o has documented this code across 1 Jeep model — most commonly on Wrangler. P00B7 means the powertrain control module has determined that coolant flow through the engine's cooling system is too low or not performing as expected. The computer compares signals — typically from the engine coolant temperature sensor and a second temperature sensor (such as the radiator outlet) — and flags this code when the readings indicate coolant isn't circulating properly to manage engine temperature. Restricted flow can let the engine run hotter than designed, risking overheating. The cause is usually a thermostat, water pump, low coolant, or a sensor reading problem. Typical repair costs on Jeep range from $120 to $600, depending on the specific model and root cause.
Common Causes of P00B7
- •Stuck or faulty thermostat
- •Low coolant level or air pockets in the system
- •Failing water pump (mechanical or electric)
- •Faulty engine coolant temperature or radiator temperature sensor
- •Clogged radiator, hoses, or coolant passages with sediment/debris
- •Coolant leak reducing system volume
- •Wiring/connector faults at the temperature sensors or PCM control issue
P00B7 on Jeep by Model
Jeep Wrangler(1 issue)
- 2.0L Turbo Coolant Leak from Y-Fitting, Reservoir & Coolant Inlet Tube Fasteners2018-2025
The 2.0L turbocharged four-cylinder (GME-T4) is prone to recurring low-coolant warnings and external coolant leaks. Heat radiating off the turbocharger embrittles the plastic coolant 'Y' fitting and the coolant overflow/recovery reservoir, causing them to crack and weep. Separately, Stellantis issued a customer satisfaction notification for 2021-2022 2.0L JLs covering coolant seepage from the coolant inlet tube fasteners, with the fix being removal of the fasteners, application of thread sealant, and reinstallation. Owners report having to repeatedly top off the recovery bottle. If a coolant leak migrates internally it can contaminate the oil and eventually damage bearings, so persistent low-coolant should be diagnosed promptly.
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View P00B7 across all makes →Frequently Asked Questions
What does P00B7 mean on Jeep?▼
P00B7 stands for "Engine Coolant Flow Low/Performance." P00B7 means the powertrain control module has determined that coolant flow through the engine's cooling system is too low or not performing as expected. The computer compares signals — typically from the engine coolant temperature sensor and a second temperature sensor (such as the radiator outlet) — and flags this code when the readings indicate coolant isn't circulating properly to manage engine temperature. Restricted flow can let the engine run hotter than designed, risking overheating. The cause is usually a thermostat, water pump, low coolant, or a sensor reading problem. On Jeep specifically, this code is documented across 1 model.
What causes P00B7 on Jeep vehicles?▼
Common causes on Jeep: Stuck or faulty thermostat, Low coolant level or air pockets in the system, Failing water pump (mechanical or electric), Faulty engine coolant temperature or radiator temperature sensor, Clogged radiator, hoses, or coolant passages with sediment/debris. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P00B7 on a Jeep?▼
Repair costs on Jeep range from $120 to $600, depending on the specific model and root cause.
Which Jeep models have P00B7 documented?▼
Au7o has documented P00B7 on 1 Jeep model: Wrangler.