BMW 5251 Service Manual page 980

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
.
P I 087
P I 088
PI089
PI090
PO600
/
217
I
Serial Communication Link
204
100
202
202
203
203
PI091
PI092
PI093
PI094
P l l l l
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)
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229
229
230
235
PI121
PI122
PI123
0 2 Sensor Circuit Slow Response in Lean Control Range (Bank 1 Sensor 1)
0 2 Sensor Circuit Slow Response in Rich Control Range (Bank 1 Sensor 1)
0 2 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)
0 2 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
0 2 Sensor Heater Circuit Signal Intermittent (Bank 1 Sensor 1)
0 2 Sensor Heater Circuit Low Voltage (Bank 1 Sensor 1)
0 2 Sensor Heater Circuit High Voltage (Bank 1 Sensor 1)
0 2 Sensor Heater Circuit Signal Intermittent (Bank 1 Sensor 2)
0 2 Sensor Heater Circuit Low Voltage (Banic 1 Sensor 2)
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