1997 BMW 528i Coolant temperature sensor

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I On-Board Diagnostics
Engine diagnostic trouble codes: M54 engine (continued)
P-code
BMW-FC Explanation
Catalyst System Efficiency Below Threshold (Bank 2)
PO430
PO443
PO444
PO445
PO455
PO456
PO491
PO492
PO500
PO441 1250 / Evaporative Emission System Incorrect Purge Flow
234
I I
68
68
68 143
143
245
246
214
PO604
PI083
PI084
PI085
PI086
Evaporative Emission System Purge Control Valve Circuit
Evaporative Emission System Purge Control Valve Circuit Open
Evaporative Emission System Purge Control Valve Circuit Shorted
Evaporative Emission System Leak Detected (large leak)
Evaporative Emission System Leak Detected (very
small leak)
Secondary Air injection System Insufficient Flow (Bani( 1)
Secondary Air Injection System insufficient Flow
(Banic 2)
Vehicle Speed Sensor
'A'
Idle Air Control System PO505
.
PI 087
PI 088
PI089
PI090
PO600 / 217 I Serial Communication Link
204
100
202
202
203
203
PI091
PI092
PI093
PI094
Pllll
PI112
PI120
Internal Control Module Random Access Memory (RAM) Error
Fuel Control Limit Mixture Too Lean (Bank 1 Sensor
1)
Fuel Control Limit Mixture Too Rich (Bank 1 Sensor 1)
Fuel Control Limit Mixture Too Lean (Bank 2 Sensor 1)
Fuel Control Limit Mixture Too Rich (Banic 2 Sensor 1) ~ ~
229
229
230 235
PI121
PI122
PI123
02 Sensor Circuit Slow Response in Lean Control Range (Bank 1 Sensor 1)
02 Sensor Circuit Slow Response in Rich Control Range (Bank 1 Sensor
1)
02 Sensor Circuit Slow Response in Lean Control Range (Banlc 1 Sensor 2)
Pre Catalyst Fuel Trim System Too Lean
(Bank 1)
236
235
236
230
11
11
114
PI134
PI135
PI136
PI137
PI138
Pre Catalyst Fuel Trim System Too Lean (Banic 2)
Pre Catalyst Fuel Trim System Too Rich
(Bank 1)
Pre Catalyst Fuel Trim System Too Rich (Bank 2)
02 Sensor Circuit Slow Response in Rich Control Range (Banic 2 Sensor 1)
Engine Coolant Temperature Sensor Radiator Outlet Low Input
Engine Coolant Temperature Sensor Radiator Outlet High Input
Pedal Position Sensor Circuit
117
110
110
25
25
25
79
79 Pedal Position Sensor 1
RangeIPerformance Problem
Pedal Position Sensor 1 Low Input
Pedal Position Sensor 1 High Input
02 Sensor Heater Circuit Signal Intermittent (Bank 1 Sensor 1)
02 Sensor Heater Circuit Low Voltage (Bank 1 Sensor
1)
02 Sensor Heater Circuit High Voltage (Bank 1 Sensor 1)
02 Sensor Heater Circuit Signal Intermittent (Bank 1 Sensor 2)
02 Sensor Heater Circuit Low Voltage
(Banic 1 Sensor 2)
-
-

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OBD-23
On-Board ~iagnostics]
I I
PI625 / 147 I Pedal Position Sensor Potentiometer Supply Channel 2 Electrical 1
Engine diagnostic trouble codes: M54 engine (continued)
P-code
BMW-FC Explanation
PI 604
PI604
PI619
PI620
PI624
PI632
PI633
PI634
P1 634
PI 634
PI 635
PI 636 50
51 123
123
146 i I
I
I Barometric Pressure Circuit Low
Control
Module Self-Test,
Speed Monitoring
Control Module Self-Test, Speed Monitoring
Map Cooling Thermostat Control Circuit Signal Low
Map Cooling Thermostat Control Circuit Signal High Pedal Position Sensor Potentiometer Supply Channel
1 Electrical (M52: Coolant Thermostat (Coolant
Temperature Below Thermostat Regulating Temperature))
115
115
115
135
136
115
109
PI639
PI675
PI694
P2088
P2089
P2090
P2091
I I
P2229 1197 I Barometric Pressure Circuit High
Throttle
Valve Adaptation Conditions Not Met
Throttle
Valve Adaptation Limp-Home Position Unknown
Throttle Valve Adaptation Spring Test Failed
Throttle
Valve Adaptation Spring Test Failed
Throttle
Valve Adaptation Spring Test Failed
Throttle Valve Adaptation Lower Mechanical Stop not Adapted
Throttle Valve Control Circuit
Throttle Valve Position Control, Control Deviation
PI 637
I I
P2270 1215 1 02 Sensor Signal Stuck Lean (Banic 1 Sensor 2)
PI 638 1160 I Throttle Valve Position Control Throttle Stucic Temporarily
162
161
135
136
21
21 19
19 Throttle
Valve Position Control Throttle
Stucic Permanently
Throttle Valve Actuator Start Test Re-Adaptation Required
Throttle Valve Actuator Start Test Spring Test and Limp-Home Position Failed
'A' Camshaft Position Actuator Control Circuit Low (Banlc 1)
'A' Camshaft Position Actuator Control Circuit High (Banlc 1)
'B' Camshaft Position Actuator Control Circuit Low (Bank 1)
'B' Camshaft Position Actuator Control Circuit High (Bank 1)
P2271
P2272
P2273
P3041
P3198 I I -
215
216
21 6
10481
10205 02
Sensor Signal Stucic Lean (Bank 1 Sensor 2)
02 Sensor Signal
Stuclc Lean (Bank 2 Sensor 2)
02 Sensor Signal Stuclc Lean (Bank 2 Sensor 2)
02 Sensor Lean and Rich Voltage Thresholds not Reached (Bank 2 Sensor 2)
Engine Coolant Temperature Gradient Too High
Engine Coolant Temperature Signal Stuck
P3199
P3238 1 10289 I Control Module Monitoring TPU Chip Defective
10207

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/ On-Board Diaanostics I
Engine diagnostic trouble codes: M62 engine
P-code
PO01 1
PO012
PO020
PO021
PO022
PO030
PO031
PO032
I I
PO038 / 14 I H02S Heater Control Circuit High (Bank 1 Sensor 2)
PO010 / 33 / 'A' Camshaft Position Actuator Circuit (Bank 1)
BMW-FC
I I -.
Explanation
33
33
34
34
34 13
13
13
PO36
'A' Camshaft Position Timing Over-Advanced or System Performance (Bank 1)
'A' Camshaft Position Timing Over-Retarded (Bank 1)
'A' Camshaft Position Actuator Circuit (Bank 2)
'A' Camshaft Position Timing Over-Advanced or System Performance (Banlc 2)
'A' Camshaft Position Timing Over-Retarded (Banlc 2)
H02S Heater Control Circuit (Bank 1 Sensor 1)
H02S Heater Control Circuit Low (Bank 1 Sensor 1)
HOPS Heater Control Circuit Hiqh (Banlc 1 Sensor 1)
PO050
PO051
PO052
PO056
PO057
PO058
PO037 / 14 / H02S Heater Control Circuit Low (Bank 1 Sensor 2)
14
I I -.
Ir-1 ThrottleIPedal Position SensorISwitch 'A' Circuit
Low-
HO2S Heater Control Circuit (Bank 1 Sensor 2)
5
5
5
4
4
4
PO102
PO1 13
PO116
PO117
PO118
PO119
PO120
PO121
H02S Heater Control Circuit (Banlc 2 Sensor 1)
H02S Heater Control Circuit Low (Bank 2 Sensor 1)
H02S Heater Control Circuit High (Bank 2 Sensor 1)
H02S Heater Control Circuit (Bank 2 Sensor 2)
HO2S Heater Control Circuit Low (Bank 2 Sensor 2)
HO2S Heater Control Circuit Hiqh (Bank 2 Sensor 2)
PO103 1115 I Mass or Volume Air Flow Circuit High Input
115
124
123
123
123
123
117
118
PO1 23
PO125
PO128
PO1 30
PO131
POI 32
PO133
Mass or Volume Air Flow Circuit Low Input
lntalte Air Temperature Sensor 1 Circuit High
Engine Coolant Temperature Circuit
RangeIPerlormance
Engine Coolant Temperature Circuit Low
Engine Coolant Temperature Circuit High
Engine Coolant Temperature Circuit Intermittent
ThrottleIPedal Position SensorISwitch 'A' Circuit
ThrottieIPedal Position SensorISwitch 'A' Circuit RanqeIPerformance
118
123 139
10
10
10
15
ThrottleIPedai Position SensorlSwitch 'A' Circuit High
insufficient Coolant Temperature for Closed Loop Fuel Control
Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)
02 Sensor Circuit (Bank
1 Sensor 1)
02 Sensor Circuit Low Voltage (Bank 1 Sensor 1)
02 Sensor Circuit High Voltage (Bank
1 Sensor 1)
02 Sensor Circuit Slow Response (Bank 1 Sensor
1)

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INDEX 'tl
WARNING
Your common sense, good
judgemenl, and general alertness are
crucial to sale and successiul service
worlr. Belore attempting any work on
your
BMM be sure lo read 001
General Warnings and Cautions
and the
copyriglll page at the front 01
the manual. Review these warnings
and
caulions each lime you prepare
lo work on your BMW. Please also
read any warnings and cautions that
accompany
tile procedures in the
manual.
312-way valve (running losses)
see Fuel tank
Abbreviations, commonly used 600-14
ABS (antilock brake system)
see
Bral(es
A/C air distribution motors
see stepper motors (below)
blower final stage (resistor pack),
replacing
640-16
blower, removinglinslalling
640-1 5
compressor, replacing
640-24 condenser, replacing 64045
control panellmodule, removing1
installing
640-1 1
evaporakr, removinglinstalling 640-29
evaporator temperature sensor
640-12 expansion valve, removinglinstailing
640-27
IHKA/ IHKR system description 640-5
receiveridrier, replacing 640-26
stepper motors 640-1 3 ventilation microiilter, replacing
020-22. 640-17
see also Heating
Accelerator
iinlcage
see Maintenance
Activated carbon canister
see Fuel tank
ADS (auxiliary throttle valve)
130-57
Air compressor
330-44
Air conditioning
see
AIC
Air distribution (flap) motors
seeNC, stepper motors
Air filter see Maintenance
Air spring
300-6, 330-12
Airbag system (SRS)
2-stage
airbag 721-4
control module, replacing 721-7 driver airbag, removinglinstalling
721-8
iiead protection airbag 721-12 components 721-1 1
indicator
lighl721-4
passenger airbag, removinglinstalling
721-9 side-impact airbags crash sensor,
replacing
721-7
Airflow sensor see 130 under appropriate
fuel
injection system
Air pump
see 130 under appropriate fuel
injection system, secondary air
injection system
Air suspension
see Electronic height control
(EHC)
Alarm
see Anti-theft alarm
Alignment see
Wheei alignment
Aluminum suspension components
300-2
Antenna 650-6
Alternator see Battery, starter, alte rnator
Amplifier
650-4
Anti-theft alarm (DWA)
515-24 emergency disarming 515-31
Antifreeze (engine coolant)
see Maintenance
see also Cooling system
Antilock brake system (ABS) see Brakes
ASC see Brakes
ATF (automatic transmission fluid)
see Automatic transmission
see also Cooling systern
Automatic headlight adjustmenl
(LWR) see Lights
Automatic seat belt tensioner
720-4
Automatic shiftloclc
see
Gearshift
Automatic transmission
applications
200-3, 240-4
ATF 020-10, 200-4
capacity 240-8 checking 240-6
drainingifilling 240-7
heat exchanger 170-5
fluid pan and strainer 240-9 gearshift
see Gearshift
ID tag
200-3 range switch 610-6
removaliinstallation 240-10
steptronic see Gearshift
Auxiliary cooling fan
see
Coollng system, electric Ian
Auxiliary throttle valve (ADS)
130-57
Axle joint
see Drive axle
Back-up light switch
automatic transmission see Automatic transmission. range switch
- .~.~~~
manual transmission 230-8 -
- I

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4 INDEX
Door window anti-trap
512-4 convenience openinglclosing 512.4
regulator and motor 512-1 1
service
512-5 switches 512-3
see also Switches
Double
VANOS see VANOS
Drive
axle
CV joint 331-15 CV joint boot 331-15
rernovinglinstalling 331-14
Drive belt
see Maintenance
Driveabiiity troubleshooting
100-4
Driveaway protection
see EWS (eiectronic immobilization)
Driveshaft aligning
260-7
center bearing, replacing 260-12 CV joint, replacing 260-14
itex-disc, replacing 260-1 1
iront centering guide, replacing 260-13
rernovinglinstailing 260-6
lroubleshooting 260-3
U-joint 260-3
DSC
see Braires
DTC (diagnostic trouble code)
OBD-8
DWA
see Anti-theft alarm
ECM (engine control module)
see 130 under appropriate
iuei
injection system
ECT (engine coolant temperature)
sensor see 130 under appropriate
iuei
injection system
EDK adaptation
130-69
MS 43.0 130-35
EHC see Electronic iieigiit control (EHC)
Electric cooling fan
see Cooling system, cooling
fan
see also Cooiing system, eiectric fan
Electrical switches
see Switches
Electrical system abbreviations
600-14 bus System 600-4
component location table 610-3
components
photos
610-36
Sport Wagon 610-81 engine 121-2
troubleshooting 600-15
voltage and polarily 600-5 wire color codes 600-12
wiring diagrams 600-12
Electrical wiring diagrams
ELE-1
Eiectricaliy heated thermostat
(characteristic map)
170-4
Eiectronic height control (EHC)
300-8, 330-44
Eiectronic immobilization
see EWS (electronic immobilization)
Eiectronics box
(E-box)
610-37
Emergencies
010-18
Emergency brake see
BraBes, parking brake Engine
see also Cylinder head and valvetrain
applications
100-2
compression, testing 113-5
cooling see Cooiing system
crankshaft front oil seai
see Crankshaft oil seals
cyiinder leak-down test 113-8
diagnostic testing 113-1
drive belts
see Maintenance
driveability troubleshooting
100-4
engine management systems 100-2
see also Ignition
see also Fuel injection
fuel supply
130-6
ground connections 100-5
see also 61 0 identilying ieatures 100-3
lubrication svstem
see
~ubricetion system
mount
on-board diagnostics
OBD-I
oxygensensor
see Fuel injection
see also Exhaust system
Dreventive maintenance
see Maintenance
removal/installation
Engine control module (ECM)
see 130 under appropriate iuel
injection system
Engine cooiant temperature (ECT)
sensor see 130 under appropriate iuel
injection
system
Engine cooling fan
see Cooiing system, electric fan
Engine hood
41
0-6 raising to service position 410-6
Engine troubleshooting
see Engine, driveability troubleshooting
EVa~oratiVe control svstem
160-3 see also 130 under aDDroDriate iuel
injection system
Evaporator see
NC
Evaporator temperature sensor see
NC