car code po240

Asked by Mar 06, 2013 at 05:58 AM about the 2000 Mercury Cougar 2 Dr V6 Hatchback

Question type: Maintenance & Repair

3 Answers

96,045

P0240 - Turbocharger/Supercharger Boost Sensor 'B' Circuit Range/Performance -- This diagnostic trouble code (DTC) P0240 will set if the boost pressure sensor signal is above the predicted range. -- The boost pressure sensor responds to pressure changes in the intake manifold. This pressure is created by the turbocharger and changes with accelerator pedal position (APP) and engine speed. The engine control module (ECM) uses this information to assist in diagnosis of the barometric pressure (BARO) sensor and to provide engine overboost protection. The boost pressure sensor has a 5-volt reference circuit, a low reference circuit, and a signal circuit. The engine control module (ECM) supplies 5 volts to the boost pressure sensor on the 5-volt reference 2 circuit, and provides a ground on a low reference circuit. The boost pressure sensor provides a signal to the ECM on a signal circuit relative to the pressure changes. The ECM monitors the boost pressure sensor signal for voltage outside of the normal range. The ECM calculates a predicted value for the boost pressure sensor. The ECM then compares the predicted value to the actual signal.

96,045

Possible causes: Boost pressure sensor harness is open or shorted - Boost pressure sensor circuit poor electrical connection - Faulty boost pressure sensor - Faulty Turbo/Super Charger - Engine over temperature - Ignition misfire exceeds the calibrated threshold - Faulty Knock sensor (KS)

Hello tenspeed I am still having problems finding code p0240. The ford service tech states p0234 as a supercharger boost condition which I believe do not have and po243 supercharger boost bypass solenoid circuit malfunction but no p0240.

Your Answer

Add photo
Cougar

Looking for a Used Cougar in your area?

CarGurus has 198 nationwide Cougar listings and the tools to find you a great deal.

ZIP:

Search Mercury Cougar Questions

Mercury Cougar Experts

#1 lisagayle
lisagayle
Reputation 2,180
#2 Tom Demyan
Tom Demyan
Reputation 710
#3 Jessica Cornelison
Jessica Cornelison
Reputation 590
View All

Related Models For Sale

Used Ford Mustang
380 Great Deals out of 46,804 listings starting at $1,500
Used Mercury Grand Marquis
21 Great Deals out of 1,816 listings starting at $1,600
Used Chevrolet Camaro
161 Great Deals out of 32,677 listings starting at $1,995
Used Ford F-150
2,239 Great Deals out of 208,516 listings starting at $1,499
Used Chevrolet Impala
507 Great Deals out of 28,960 listings starting at $995
Used Honda Accord
713 Great Deals out of 86,717 listings starting at $699
Used Pontiac Grand Prix
20 Great Deals out of 2,852 listings starting at $1,995
Used Chevrolet Monte Carlo
13 Great Deals out of 1,406 listings starting at $1,995
Used Pontiac Firebird
5 Great Deals out of 719 listings starting at $2,500
Used Toyota Camry
799 Great Deals out of 89,195 listings starting at $950