2002 dtc codes

7/28/2019 2002 DTC Codes

1/35

7/28/2019 2002 DTC Codes

2/35

7/28/2019 2002 DTC Codes

3/35

7/28/2019 2002 DTC Codes

4/35

7/28/2019 2002 DTC Codes

5/35

2002 4.3L (L35, LU3) truck engine, and V8 OHV car & truck engines4.3L (L35, LU3), 4.8L (LR4), 5.0L (L30), 5.3L (LM7), 5.3L flex fuel(L59), 5.7L (L31), 5.7L (LS1), 5.7L (LS6), 6.0L (LQ4), 8.1L (L18)

ENGINE DIAGNOSTIC PARAMETERS

2002file6.doc

SENSED PARAMETER FAULTCODE

MONITOR STRATEGYDESCRIPTION

MALFUNCTION CRITERIA ANDTHRESHOLD VALUE(S)

SECONDARY PARAMETERS ANDENABLE CONDITIONS

TIME LENGTH ANDFREQUENCY

MILILLUMINATION

TYPE

* These codes are not required with the 5.3L (LM7) truck engine but are used for other applications within this OBD II Group

2002file6.doc

(B1S1) HEATED

OXYGEN SENSOR

CIRCUIT SLOW

RESPONSE

P0133 Detects slow rich to lean

and lean to rich HO2S

signal transition rates.

The oxygen sensor transitions

between rich and lean states. HO2S

sensor average transition time:

L/R > 208 ms

R/L > 255 ms

Closed Loop Fuel Control.

1200 < RPM < 3000

23 < Air Flow < 50g/sec.

Minimum system voltage: 9v

TPS > 5%

Fuel > 10%

ECT > 65 C

CCP>0

Response Delay Timer = 1.5 sec

DTCs P0131, P0132, P0134 and P0135 not setEngine Run > 160 sec

No AIR, EGR, No Throttle, MAT ,Camel Mode

Injector, EST Control, Coolant, Air Flow Faults

active, Purge Control, Misfire, MAP

50 sec

Once per trip.

DTC Type B

(B1S1) HEATED

OXYGEN SENSOR

CIRCUIT NO

ACTIVITY

P0134 Circuit Continuity

Detects an HO2S circuit

open.

Oxygen sensor voltage remains

between 350-550 mv

.




active, Purge Control, Misfire, MAPEngine Run > 409 sec

570 test failures in a 600 test

sample

100 ms/test

Continuous.

DTC Type B

(B1S1) HEATED

OXYGEN SENSOR

HEATER CIRCUIT

P0135 Detects a malfunctioning

HO2S heater circuit by

comparing time to HO2S

activity to a calibrated

threshold.

Oxygen sensor time to activity

exceeds a lookup table value as a

function of average flow rate.

(IAT & ECT System Voltage >11 v.

Avg Flow < 32 g/sec




Once per cold start trip. DTC Type B

7/28/2019 2002 DTC Codes

6/35

7/28/2019 2002 DTC Codes

7/35

7/28/2019 2002 DTC Codes

8/35



2002file6.doc






MILILLUMINATION

TYPE


2002file6.doc

(B2S1) HEATED

OXYGEN SENSOR

CIRCUIT NO

ACTIVITY


Detects an HO2S circuit

open.

Oxygen sensor voltage remains

between 350-550 mv

.


Fuel > 10%




Engine Run > 409 sec


sample

100 ms/test

Continuous

DTC Type B

(B2S1) HEATED

OXYGEN SENSOR

HEATER CIRCUIT

P0155 Detects a malfunctioning

HO2S heater circuit by

comparing time to HO2Sactivity to a calibrated

threshold.

Oxygen sensor time to activity

exceeds a lookup table value as a

function of average flow rate.

(IAT & ECT System Voltage >11 v.Avg flow < 30 g/sec




Once per cold start trip. DTC Type B

(B2S2) HEATED

OXYGEN SENSOR

CIRCUIT LOW


Detects an HO2S voltage

stationary lean (low signal

voltage) condition.

Oxygen sensor voltage remains below

80 mv

Oxygen sensor voltage below 420 mv

Closed Loop Fuel Control.

TPS: 3-70%

Fuel > 10%


No AIR, EGR, No Throttle, MAT ,Camel ModeInjector, EST Control, Coolant, Air Flow Faults


Power Enrichment active 2 sec

Fuel > 10%



Injector, EST Control, Coolant, Air Flow Faultsactive, Purge Control, Misfire, MAP


sample and polling the front

HO2S sensor twice.

100 ms/test

Continuous


sample

100 ms/test

Continuous

DTC Type B

7/28/2019 2002 DTC Codes

9/35

7/28/2019 2002 DTC Codes

10/35



2002file6.doc






MILILLUMINATION

TYPE


2002file6.doc

BANK 1 FUEL TRIM

SYSTEM LEAN

P0171 Determines if the fuel

control system is in a lean

condition

The normalized weighted

long term fuel trim

parameter > + 20 %

No VSS, Throttle, Purge control, Misfire, MAT,

MAP, - Camel Mode, Injector, EST Control, EGR

Sensor, Coolant, Crank sensor, Air flow, Knock

Sensor or AIR DTCs

BARO > 74 KPa

115C > ECT > 50C

90 g/s > MAF > 5 g/s

90 Kpa > MAP > 26 KPa

90C > IAT > -20C

3000 rpm > Engine speed > 400 rpmTP < 90%

VS < 85 mph

Fuel Level > 10%

Continuous

DTC Type B

BANK 1 FUEL TRIM

SYSTEM RICH


control system is in a rich

condition

The normalized weighted long term

fuel trim parameter < -17%

and no excessive purge vapors present


MAP, - Camel Mode Injector, EST Control, EGR


Sensor or AIR DTCs

BARO > 74 KPa

115C > ECT > 50C

90 g/s > MAF > 5 g/s90 Kpa > MAP > 26 KPa

90C > IAT > -20C

3000 rpm > Engine speed > 400 rpm

TP < 90%

VS < 85 mph

Excess Purge Test:

40 g/s > MAF > 12 g/s

Purge Duty Cycle > 20%

RPM > 800

Continuous

Purge test 4 seconds

DTC Type B

BANK 2 FUEL TRIM

SYSTEM LEAN


control system is in a lean

condition

The normalized weighted

long term fuel trim

parameter > + 20 %




Sensor or AIR DTCs

BARO > 74 KPa

115C > ECT > 50C

90 g/s > MAF > 5 g/s


90C > IAT > -20C

3000 rpm > Engine speed > 400 rpm

TP < 90%

VS < 85 mph

Fuel Level > 10%

Continuous

DTC Type B

7/28/2019 2002 DTC Codes

11/35



2002file6.doc






MILILLUMINATION

TYPE


2002file6.doc

BANK 2 FUEL TRIM

SYSTEM RICH


control system is in a rich

condition

The normalized weighted long term

fuel trim parameter < -17%

and no excessive purge vapors present




Sensor or AIR DTCs

BARO > 74 KPa

115C > ECT > 50C

90 g/s > MAF > 5 g/s


90C > IAT > -20C

3000 rpm > Engine speed > 400 rpmTP < 90%

VS < 85 mph

Excess Purge Test:

40 g/s > MAF > 12 g/s

Purge Duty Cycle > 20%

RPM > 800

Continuous

Purge test 4 seconds

DTC Type B

Injector Control

Circuit

(ODM)


Control circuit voltage is

monitored duringoperation. It should be low

during operation and near

B+ when off.

The PCM detects that the commanded

state of the driver and the actual state

of the control circuit do not match.

Engine speed > 400 rpm.

Ignition voltage > 6.0 volts, but < 18 volts

5 seconds

Continuous.

DTC Type B

FUEL PUMP

CONTROL CIRCUIT

(ODM)


Control circuit voltage is

monitored during

operation. It should be

high during operation and

near 0 volts when off.

The PCM detects that the commanded

state of the driver and the actual state

of the control circuit do not match.

Engine speed > 400 rpm.

Ignition voltage > 6.0 volts, but < 18 volts

2.5 seconds

Continuous.

DTC Type B

7/28/2019 2002 DTC Codes

12/35

7/28/2019 2002 DTC Codes

13/35

7/28/2019 2002 DTC Codes

14/35

7/28/2019 2002 DTC Codes

15/35

7/28/2019 2002 DTC Codes

16/35

2002 4 3L (L35 LU3) truck engine and V8 OHV car & truck engines

7/28/2019 2002 DTC Codes

17/35



2002file6.doc






MILILLUMINATIONTYPE


2002file6.doc

EVAP. Emission

Control System

Malfunction

P0440

This DTC will detect a

weak vacuum condition

(large leak or restriction)

in the EVAP. system.

WEAK VACUUM TEST- STAGE I

(Cold Test):

Tank Vacuum 9 or 13 in. H2O

within a value (30-80 integral

seconds) depending on application.

WEAK VACUUM TEST- STAGE II

(Warm Test):

Stage I test failed previous trip and

this trip.

Tank Vac. < 11 in. H2O

TEST ENABLE :

MAP DTCs not active

Volt-DTCs not active

TP Sensor DTCs not active

VS Sensor DTCs not active

O2 Sensor DTCs not active

Coolant Sensor DTCs not active

IAT Sensor DTCs not active

Fuel Level >15.0% but < 85.0%

Power-up Vacuum Test Fail = FalsePLM > .89

System Voltage > 10V but < 18V

COLD START TEST:

ECT > 3.75C but < 30 C

IAT > 3.75C but < 30 C

Cold Temperature D ( ECT - IAT):

< 8.25 C if ECT > IAT

BARO > 75.0 kPa

FUEL SLOSH TEST:Tank Vacuum D value and Fuel Level D value

based on fuel level.

WEAK VACUUM TEST-

STAGE I

(Cold Test): Fault present for

an integral time 50, or 70sec.

depending on application.

Test must complete within 360,

420 ,460, 525, or 600 seconds

from when purge is enabled,

Depending on application

WEAK VACUUM TEST-

STAGE II (Warm Test): Fault

present for a time 1400 sec.

Once per cold start

DTC Type A

(Behaves as a

Type B)

7/28/2019 2002 DTC Codes

18/35

7/28/2019 2002 DTC Codes

19/35

7/28/2019 2002 DTC Codes

20/35

7/28/2019 2002 DTC Codes

21/35

7/28/2019 2002 DTC Codes

22/35

7/28/2019 2002 DTC Codes

23/35

7/28/2019 2002 DTC Codes

24/35

7/28/2019 2002 DTC Codes

25/35

7/28/2019 2002 DTC Codes

26/35

7/28/2019 2002 DTC Codes

27/35

7/28/2019 2002 DTC Codes

28/35


7/28/2019 2002 DTC Codes

29/35


2002file6.doc






MILILLUMINATIONTYPE


2002file6.doc

EGR VALVE

CIRCUIT

PERFORMANCE

Actual Position

Commanded Position.

*P1404 This DTC determines if

the EGR valve pintle is

stuck open when the valve

is commanded closed.

Pintle Position > 10 A/D counts from

learned closed position for 10 seconds

for 3 subroutines

System voltage 11.7 volts or greater.

EGR valve strokes to 100% duty cycle between

subroutines. Enable parameters for stroke:

80C < ECT < 118C

IAT < 100C

Desired EGR > 20 %

3 failures for 10 seconds each

test (with 100% pintle

movement for .7 seconds

between tests).

Continuous every 100 ms.

DTC Type B

AIR INJECTION

SYSTEM

BANK 1

*P1415 HO2S sensors indicate

lean condition present

when AIR pump is turnedon with 8% additional

offset fuel being added

during closed loop

operation

Fails when: Bank 1 HO2S sensor is

not < 222 mv for 1.3 seconds AND

Bank 1 fuel integrator delta is not 20% while a passing value occurs for

bank 2 when pump turns on during

closed loop operation

No MAF, MAP, MAT, ECT, TPS, HO2S, Purge,

Engine Protection, Fuel Trim, Fuel Injector, EST,

Crank sensor or Misfire DTCs set.Veh Speed 15 mph

Baro 75 kPa

Engine run > 2 sec

Air flow < 22 g/s

A/F Ratio = 14.7:1

Engine Load < 33.25% of full engine load

Ignition voltage > 11.7 V

PE, DFCO, COT not active

Engine run 15 sec after closed loop operation

Fuel integrator >97% & < 103%Powerup Coolant temp < 80C

RPM > 900

ECT 2 C

ECT < 110 C

IAT >-10C and IAT < 100C

In BLM cells 5

4.0 seconds

Up to 3 times

DTC Type B

7/28/2019 2002 DTC Codes

30/35



7/28/2019 2002 DTC Codes

31/35


2002file6.doc






MILILLUMINATIONTYPE


2002file6.doc

EVAP SYSTEM

FLOW DURING

NON-PURGE

P1441 This DTC will determine

if the purge solenoid is

leaking.

PURGE VALVE LEAK TEST:

Purge Valve closed

TP > 0% but < 99.6%

Vacuum 10 KPa

Tank Vacuum 12 in. H2O for2 sec

within 37.5 seconds after 30 second

delay.

TEST ENABLE :

MAP DTCs not active

Volt-DTCs not active

TP Sensor DTCs not active

VS Sensor DTCs not active

O2 Sensor DTCs not active

Coolant Sensor DTCs not active

IAT Sensor DTCs not active

Fuel Level >15.0% but < 85.0%

PLM > .89

System Voltage > 10V but < 18V

COLD START TEST:

ECT > 3.75C but < 30 C

IAT > 3.75C but < 30 C

Cold Temperature D ( ECT - IAT):

< 8.25 C if ECT > IAT

BARO >75.0 kPa

FUEL SLOSH TEST:

Tank Vacuum D value and Fuel Level D value

based on fuel level and application.

EXCESS VACUUM TEST -STAGE I :

Vent solenoid commanded OPEN

Fuel Tank Vacuum < 7 in. H2O

WEAK VACUUM TEST -Stage I:

Throttle position < 75%

Vehicle speed < 65 mph

Tank Vacuum 9 or 13 in. H2O within a value (30-

80 integral seconds) depending on application..

PURGE VALVE LEAK TEST:

180 seconds Max.

Once per cold start

Lt duty only

DTC Type B

TAC SYSTEM MAF

PERFORMANCE

P1514 Indicates that measured

engine

airflow does not match

estimated

engine airflow as

established by

the TPS.

MAP based airflow - estimated

airflow > 150 mg/cyl

AND

MAF based airflow - estimated

airflow > 150 mg/cyl

Engine running = true.

Ignition on > 1 sec.

RPM > 500.

No Throttle Actuation DTC's.

No PCM-TACM Serial

Data DTC.

Both TPS Circuit DTC's

are not set.

No PCM Processor DTC's

No TACM Processor DTC

Both counters are incremented

by 2 for every error and

decrement by 1 for every pass;

both thresholds are 20; both

counters must exceed threshold

to set DTC.

Check runs every 18.75 ms.

DTC Type A

For use on

vehicles with

ETC



7/28/2019 2002 DTC Codes

32/35


2002file6.doc






MILILLUMINATIONTYPE


2002file6.doc

COMMAND vs

ACTUAL

THROTTLE PERF.

(PCM)

P1515 Indicates that the PCM has

detected a throttle

positioning error

ABS ( throttle error) > 5%.

[Throttle error = Measured throttle

position - modeled throttle position]

Ignition in Run or Crank

TACM determines PCM Desired Throttle Position

is valid.

Not in battery saver mode.

No Airflow Actuation DTC.

(Engine Running = true) OR (Ignition Voltage >

8.5 volts).

No Throttle Actuation DTC.

No PCM-TACM Serial Data DTC.

Both TPS Circuit DTC's

are not set.

No PCM Processor DTC's.

No TACM Processor DTC.

High counter increments by 2

for every throttle error > 5%;

decrements by 1 if %

7/28/2019 2002 DTC Codes

33/35


2002file6.doc






MILILLUMINATIONTYPE


2002file6.doc

COMMAND vs

ACTUAL

THROTTLE PERF.

(TAC MODULE)

P1516 Indicates that the TAC

Module has detected a

throttle positioning error

OR

Either Processor cannot

determine throttle

positioning

OR

Both TP Sensors are

invalid

ABS (throttle error):

a) 2 degrees for >200 ms with no

change in error sign.

OR

b) 2 degrees for >500 ms for throttle

command changes 2 degrees.

OR

c) 5 degrees for >200 ms for throttle

command changes

5 degrees.OR

d) 5 degrees for > 300 ms with no

change in error sign.

OR

2) PCM processor DTC's.

OR

3) TACM processor DTC.

OR

4) both TPS Circuit DTC's are set.

OR

5) PCM-TACM Serial Data DTC w/

any APP Sensor DTC or TP Sensor

DTC.

[Throttle error = Measured throttle

position - commanded throttle

position]

Ignition in Run or Crank.

Ignition voltage > 5.23 V.

Valid TACM - PCM serial data.

Not in battery saver mode.

One occurrence.

Check runs every 3 ms.

DTC Type A

For use on

vehicles with

ETC



7/28/2019 2002 DTC Codes

34/35


2002file6.doc






MILILLUMINATIONTYPE


2002file6.doc

TAC MODULE

PROCESSOR

P1517 Indicates that TAC

Module is unable to

correctly read data from

the flash memory.

Indicates that TAC

Module is unable to

correctly write and read

data to and from RAM.

Indicates that the TAC

Module has detected an

internal processor integrity

fault.

1) Power-up test fails to read/write

data OR

2) Max. allowed Running Resets

exceeded OR

3) ROM checksum does not match

expected checksum OR

4) RAM data read does not match

data written OR

5) Failure of Interrupt process flag to

match expected value.

OR

6) Program is not executed in the

proper order OR

7) Primary and Redundant RAM

variables disagree OR

8) Primary and Redundant Indicated

Pedal Position calculation difference

> 7.1%.

OR

9) Math/Logic test fails to equate to a

predetermined value. OR10) Internal Register data read does

not match data written.

OR

11) Internal Timer fails to increment

OR

12) Watchdog Timer fails to

increment OR

13) Failure of Processor Stack pointer

to zero at Main Loop.

Ignition in Run or Crank.

Ignition voltage > 5.23 V.

Valid TACM - PCM serial data.

1) One occurrence

Check runs at Reset

initialization

2) 12 occurrences during

ignition cycle

Check runs at Reset

initialization

3) One occurrence.

Check runs at power up and

every 24 seconds thereafter.

4) One occurrence.

Check runs at power up and

every 153 milliseconds

thereafter

5) - 13) One occurrence.

Check runs every 3

milliseconds

DTC Type A

For use on

vehicles with

ETC

7/28/2019 2002 DTC Codes

35/35

2002 dtc codes

Documents