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P0ACEMinorHybrid-EV

P0ACE on 2005-2012 Ford Escape (Hybrid, Hybrid Limited) — Hybrid Battery Temperature Sensor "C" Circuit Intermittent/Erratic

1 vehicles · 1 makes · $400-$1,100 repair

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Most Reported On

2005-2012Ford EscapeHybrid, Hybrid Limited

P0ACE is an OBD-II diagnostic trouble code meaning “Hybrid Battery Temperature Sensor "C" Circuit Intermittent/Erratic.” An intermittent/erratic fault in hybrid battery temperature sensor 'C' circuit. This code is most commonly reported on 2005-2012 Ford Escape (Hybrid, Hybrid Limited), with repair costs ranging from $400 to $1,100.

On This Page

  • Common Causes
  • Repair Cost
  • Vehicles (1)
  • Related Codes
  • FAQ
  • Sources (3)
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Common Causes

1Loose/corroded connector
2Intermittent wiring
3Marginal sensor
4BMS fault

Typical Repair Cost

$400 - $1,100

Based on 1 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.

Diagnostic Tools

This is a powertrain code, so a basic OBD-II reader can read it. These read P0ACE.

Reads P codes$20–$40

ANCEL AD310 Classic OBD-II Scanner

by ANCEL

A simple code reader for engine (P) codes on many compatible OBD-II vehicles. It does not support every vehicle or hybrid/EV application, and it does NOT read body, chassis or network codes; confirm exact-vehicle compatibility before buying.

  • ✓Read & clear engine (P) codes
  • ✓View freeze frame data
  • ✓I/M readiness status
  • ✓No batteries or app needed
Check Price on Amazon
Reads P codes$90–$120

BlueDriver Pro Bluetooth Scanner

by BlueDriver

Bluetooth scanner with a companion app that reads beyond the engine module — ABS, SRS and transmission — plus manufacturer-specific codes on many vehicles.

  • ✓Enhanced diagnostics (ABS, SRS, transmission)
  • ✓Repair Reports with verified fixes
  • ✓Smog check readiness
  • ✓Free app (iOS & Android)
Check Price on Amazon
Reads P codes$180–$230

LAUNCH CRP123X V3.0 Elite OBD-II Scanner

by LAUNCH

Handheld scanner covering the four major systems (engine, transmission, ABS, SRS) with live data streaming and graphing.

  • ✓Engine, transmission, ABS, SRS diagnostics
  • ✓Live data stream & graphing
  • ✓AutoVIN for vehicle identification
  • ✓Free lifetime updates via Wi-Fi
Check Price on Amazon
Reads P codes$350–$450

Autel MaxiCOM MK808S Diagnostic Tool

by Autel

Shop-level tablet with all-system coverage and bi-directional control, so you can command a module rather than only read it.

  • ✓All-system diagnostics (25+ modules)
  • ✓Bi-directional control & active tests
  • ✓Oil reset, EPB, BMS, TPMS, injector coding
  • ✓7-inch touchscreen with Android OS
Check Price on Amazon

What you can do yourself, and what needs a shop

Reading the code, clearing it, and watching whether it returns is a driveway job with the right scanner. These steps are not:

  • •Module programming or software updates — needs the manufacturer software or a J2534 pass-through with a paid subscription.
  • •Replacing a control module — most are VIN-programmed and immobilizer-registered, so a new one does nothing until it is coded to your car.
  • •Airbag/SRS component work — a stored fault can deploy a live device.

If the vehicle is still under warranty, check for an open recall or technical service bulletin before buying anything — the repair may already be covered.

As an Amazon Associate, we earn from qualifying purchases. Prices are approximate and may vary.

Vehicles Affected (1)

Ford P0ACE page →
EscapeCritical

Hybrid Inverter/Motor Electronics Coolant Pump (MECS Pump) Failure — "Stop Safely Now" Shutdown

2005-2012$400-$1,100

Related Codes (8)

P0AC0Hybrid Battery Pack Current Sensor "A" Circuit Range/PerformanceP0AC1Hybrid Battery Pack Current Sensor "A" Circuit LowP0AC2Hybrid Battery Pack Current Sensor "A" Circuit HighP0AC3Hybrid Battery Pack Current Sensor "A" Circuit Intermittent/ErraticP0A00Motor Electronics Coolant Temperature Sensor CircuitP0A01Motor Electronics Coolant Temperature Sensor Circuit Range/PerformanceP0A02Motor Electronics Coolant Temperature Sensor Circuit LowP0A03Motor Electronics Coolant Temperature Sensor Circuit High

FAQ

What does P0ACE mean?

P0ACE stands for "Hybrid Battery Temperature Sensor "C" Circuit Intermittent/Erratic." An intermittent/erratic fault in hybrid battery temperature sensor 'C' circuit.

What are the most common causes of P0ACE?

The most common causes of P0ACE are: Loose/corroded connector, Intermittent wiring, Marginal sensor, BMS fault. The specific cause varies by vehicle.

How much does it cost to fix P0ACE?

Repair costs for P0ACE range from $400 to $1,100, depending on the vehicle and root cause.

Which vehicles are affected by P0ACE?

Au7o has documented P0ACE across 1 vehicle models from 1 manufacturers: Ford.

Sources (3)

  • Forumgoing to be replacing my MECS pump — Ford Escape Automobiles Forum (escape-city.com)
  • ForumMaster Electrical Overheat Shutdown MECS Pump Replacement — Ford Forums Online
  • articleFord Escape Hybrid — Preliminary Information (Part 2 of 3), ATSG
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Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.

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