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Model: Cherokee 2,514.0 Grand Cherokee 4,014,7 Wrangler 2,5/4,0<br />

EOBD<br />

type<br />

Pi195<br />

Pi196<br />

Fault location Probable cause<br />

Heated oxygen sensor (H02S) 1,<br />

bank 1 - slow response<br />

Heated oxygen sensor (H02S) 1,<br />

bank 2 - slow response<br />

Engine management/transrnission I $ 5<br />

Pi197 Heated oxygen sensor (H02S) 2, I Wiring, heating inoperative, exhaust leak, H02S<br />

bank 1 - slow response<br />

Pi280 I Fuel pump relay - circuit malfunction / Wiring, fuel pump relay<br />

Pi281<br />

Engine temperature low for long period<br />

Wiring, heating inoperative, exhaust leak, H02S<br />

Wiring, heating inoperative, exhaust leak, H02S<br />

Pi282 1 Fuel pump relay I Wiring open circuitlshort circuit, fuel pump relay<br />

P 1294<br />

Pi295<br />

Idle speed control (ISC) system - rpm tower1<br />

higher than expected<br />

Throttle position (TP) sensor - no 5 volt<br />

supply<br />

Pi296 Manifold absolute pressure (MAP) sensor - Wiring, MAP sensor, ECM<br />

no 5 volt supply<br />

Pi297<br />

Pi298<br />

Manifold absolute pressure (MAP) sensor<br />

System too lean at prolonged wide open<br />

throttle<br />

Wiring, engine cooling system, coolant thermostat, ECT<br />

sensor<br />

Wiring, air leak, throttle valve tightlsticking, IAC valve<br />

Wiring, TP sensor, ECM<br />

Pi 299 Manifold absolute pressure (MAP) sensor1 Intake leak, hose connection(s), MAP sensor, TP sensor<br />

throttle position (TP) sensor<br />

Pi388<br />

Pi 389<br />

Pi390<br />

Engine control relay<br />

Wiring, hose connection(s), MAP sensor<br />

lntakelexhaust leak, MAP sensor, fuel pressurelpump, injector<br />

(s), H02S<br />

Wiring open circuitlshort circuit, engine control relay<br />

Engine control relay 1 Wiring open circuit, engine control relay<br />

Crankshaft position (CKP) sensorlcamshaft<br />

position (CMP) sensor - signal<br />

synchronisation<br />

Pi391 Crankshaft position (CKP) sensorlcamshaft Wiring, poor connection, air gap, CKP sensor, CMP sensor<br />

position (CMP) sensor - intermittent signal<br />

Pi 398 Engine control module (ECM) - misfire Wiring, poor connection, CKP sensor<br />

detection limit reached<br />

Pi475 Engine control module (ECM) - auxiliary<br />

5 volt output high I ECM<br />

Timing belt looseljumped position, CKP sensor, CMP sensor<br />

P 1478 Battery ambient temperature sensor - range1 Wiring, battery ambient temperature sensor<br />

performance problem<br />

Pi486 Evaporative emission (EVAP)<br />

system - blockage detected<br />

Pi488<br />

Pi491<br />

Pi492<br />

Pi493<br />

Pi494<br />

Pi495<br />

Engine control module (ECM) - auxiliary<br />

5 volt output low<br />

Engine coolant blower motor relay - circuit<br />

malfunction<br />

Battery ambient temperature<br />

sensor - voltage high<br />

Battery ambient temperature<br />

sensor - voltage low<br />

Evaporative emission (EVAP) leak detection<br />

pump - pressure switch<br />

Evaporative emission (EVAP) leak detection<br />

pump solenoid<br />

I Hose connection(s), hose blockedltrapped, EVAP canister<br />

Wiring, ECM<br />

Wiring open circuitlshort circuit, engine coolant blower motor<br />

Wiring, battery ambient temperature sensor<br />

Wiring, battery ambient temperature sensor<br />

Wiring, hose leaklblockage, EVAP leak detection pump<br />

Wiring open circuitlshort circuit, hose leaklblockage, EVAP<br />

leak detection pump solenoid

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