Mazda X-5. Manual — part 10

ON-BOARD DIAGNOSTIC

01–02–17

01–02

P0506 Idle speed control system RPM lower than expected

• Actual idle speed is lower than expected by 100 rpm for 14 s, when brake pedal is depressed (brake switch is

on) and steering wheel is held straight ahead (power steering pressure (PSP) switch is off).

P0507 Idle speed control system RPM higher than expected

• Actual idle speed is higher than expected by 200 rpm for 14 s, when the brake pedal is depressed (brake

switch is on) and steering wheel is held straight ahead (power steering pressure (PSP) switch is off).

P0550 PSP switch circuit malfunction

• The PCM monitors PSP switch signal at PCM terminal 2T. If input voltage is low voltage (switch stays on) for 1

min. when the VSS is above 60.0 km/h {37.4 mph} and ECT is above 60

°C {140 °F}, the PCM determines

that PSP switch circuit has malfunction.

P0564 Cruise control switch circuit malfunction

• The PCM monitors the cruise control switch signal at PCM terminal 1AQ. If the PCM detects that any one of

following switches (ON OFF, SET/-, SET/COAST, RES/+) remains on for 2 min, the PCM determines that the
cruise control switch circuit has a malfunction.

P0571 Brake switch circuit problem

• The PCM monitors changes in input voltage for brake switch No.1 and No.2. If the PCM detects that both brake

switches No.1 and No.2 remain on or off for 15 s, it determines that the brake switch circuit has a malfunction.

P0601 PCM memory check sum error

• PCM internal memory check sum error

P0602 PCM programming error

• No configuration data in the PCM

P0604 PCM random access memory (RAM) error

• PCM internal RAM malfunction.

P0606 PCM processor

• The PCM internal CPU malfunction

P0610 PCM vehicle options error

• PCM data configuration error

P0638 Throttle actuator control circuit range/performance problem

• The PCM compares the actual TP with the target TP when the engine is running. If the difference is more than

the specification, the PCM determines that there is a throttle actuator control circuit range/performance
problem.

P0661 Variable intake air solenoid valve circuit low input

• The PCM monitors the variable intake air solenoid valve control signal. If the PCM turns variable intake air

solenoid valve off but voltage at PCM terminal still remains low, the PCM determines that variable intake air
solenoid valve circuit has malfunction.

P0662 Variable intake air solenoid valve circuit high input

• The PCM monitors the variable intake air solenoid valve control signal at PCM terminal. If the PCM turns

variable intake air solenoid valve on but voltage at PCM terminal still remains high, the PCM determines that
the variable intake air solenoid valve circuit has malfunction.

P0703 Brake switch input circuit problem

• The PCM monitors changes in input voltage from the brake switch No.1. If the PCM does not the voltage

changes while alternately accelerating and decelerating 8 times, the PCM determines that the brake switch
No.1 circuit has a malfunction.

P0704 Clutch pedal position (CPP) switch input circuit problem

• The PCM monitors changes in input voltage from the CPP switch. If the PCM does not detect the voltage

changes while the vehicle runs with vehicle speed above 30 km/h {19 mph} and stops 8 times alternately, the
PCM determines that the CPP switch circuit has a malfunction.

P0850 Neutral switch input circuit problem

• The PCM monitors changes in input voltage from the neutral switch. If the PCM does not detect the voltage

changes while driving the vehicle at a vehicle speed above 30 km/h {19 mph} and clutch pedal turns press
and depress 10 times repeatedly, the PCM determines that the neutral switch circuit has a malfunction

P1260 Immobilizer system problem

• The instrument cluster detects an immobilizer system malfunction.

P2088 Oil control valve (OCV) circuit low

• The PCM monitors the OCV voltage. If the PCM detects the OCV control voltage (calculated from the OCV) is

below the threshold voltage (calculated from the battery positive voltage), the PCM determines that the OCV
circuit has a malfunction.

P2089 Oil control valve (OCV) circuit high

• The PCM monitors the OCV voltage. If the PCM detects that the OCV control voltage (calculated from the

OCV) is above the threshold voltage (calculated from battery positive voltage), the PCM determines that the
OCV circuit has a malfunction.

ON-BOARD DIAGNOSTIC

01–02–18

P2096 Target A/F feedback system too lean

• The PCM monitors the target A/F fuel trim when under the target A/F feedback control. If the fuel trim is more

than the specification, the PCM determines that the target A/F feedback system is too lean.
MONITORING CONDITION

— Rear HO2S voltage is above 0.1 V

P2097 Target A/F feedback system too rich

• The PCM monitors the target A/F fuel trim when under the target A/F feedback control. If the fuel trim is less

than specification, the PCM determines that the target A/F feedback system is too rich.

P2101 Throttle actuator circuit range/performance

• The PCM monitors the input voltage from the drive-by-wire relay when the PCM turns the drive-by-wire relay

on. If the input voltage is less than 5.0 V, the PCM determines that the drive-by-wire relay control circuit
voltage is low.

• The PCM monitors the input voltage from the drive-by-wire relay when the PCM turns the drive-by-wire relay

off. If the input voltage is more than 5.0 V the PCM determines that the drive-by-wire relay control circuit
voltage is high.

P2107 Throttle actuator control module processor error

• Throttle actuator control module internal processor error

P2108 Throttle actuator control module performance error

• PCM internal malfunction.

P2109 TP sensor minimum stop range/performance problem

• The PCM monitors the minimum TP when the closed TP learning is completed. If the TP is less than 6.03% or

more than 18.7%, the PCM determines that there is a TP sensor minimum stop range/performance problem.

P2112 Throttle actuator control system range/performance problem

• The PCM monitors the throttle actuator control duty ratio when the engine is running. If the duty ratio is more

than 95%, the PCM determines that there is a throttle actuator control system range/performance problem.

P2119 Throttle actuator control throttle body range/performance problem

• The PCM compares the actual TP with initial setting TP when the ignition switch is off. If the difference is less

than the specification, the PCM determines that there is a throttle actuator control circuit range/performance
problem.

P2122 APP sensor No.1 circuit low input

• The PCM monitors the input voltage from APP sensor No.1 when the engine is running. If the input voltage is

less than 0.35 V, the PCM determines that the APP sensor No.1 circuit input voltage is low.

P2123 APP sensor No.1 circuit high input

• The PCM monitors the input voltage from APP sensor No.1 when the engine is running. If the input voltage is

above 4.8 V, the PCM determines that the APP sensor No.1 circuit input voltage is high.

P2127 APP sensor No.2 circuit low input

• The PCM monitors the input voltage from APP sensor No.2 when the engine is running. If the input voltage is

less than 0.35 V, the PCM determines that the APP sensor No.2 circuit has a malfunction.

P2128 APP sensor No.2 circuit high input

• The PCM monitors the input voltage from APP sensor No.2 when the engine is running. If the input voltage is

more than 4.8 V, the PCM determines that the APP sensor No.2 circuit has a malfunction.

P2135 TP sensor No.1/No.2 voltage correlation problem

• The PCM compares the input voltage from TP sensor No.1 with the input voltage from TP sensor No.2 when

the engine is running. If the difference is more than the specification, the PCM determines that there is a TP
sensor No.1/No.2 voltage correlation problem.

P2138 APP sensor No.1/No.2 voltage correlation problem

• The PCM compares the input voltage from APP sensor No.1 with the input voltage from APP sensor No.2 when

the engine is running. If the difference is more than the specification, the PCM determines that there is an APP
sensor No.1/No.2 angle correlation problem.

P2177 Fuel system too lean at off idle

• PCM monitors short term fuel trim (SHRTFT), long term fuel trim (LONGFT) during closed loop fuel control at

off-idle. If the LONGFT and the sum total of these fuel trims exceed preprogrammed criteria. PCM determines
that fuel system is too lean at off-idle.

P2178 Fuel system too rich at off idle

• PCM monitors short term fuel trim (SHRTFT), long term fuel trim (LONGFT) during closed loop fuel control at

off-idle. If the LONGFT and the sum total of these fuel trims exceed preprogrammed criteria. PCM determines
that fuel system is too rich at off-idle.

P2187 Fuel system too lean at idle

• PCM monitors short term fuel trim (SHRTFT) and long term fuel trim (LONGFT) during closed loop fuel control

at idle. If the LONGFT and the sum total of these fuel trims exceed preprogrammed criteria. PCM determines
that fuel system is too lean at idle.

ON-BOARD DIAGNOSTIC

01–02–19

01–02

P2188 Fuel system too rich at idle

• PCM monitors short term fuel trim (SHRTFT), long term fuel trim (LONGFT) during closed loop fuel control at

idle. If the LONGFT and the sum total of these fuel trims exceed preprogrammed criteria. PCM determines that
fuel system is too rich at idle.

P2195 Front HO2S signal stuck lean

• The PCM monitors the front HO2S output current when the following conditions are met. If the average output

current is more than 1.2 A for 25 s, the PCM determines that the front HO2S signal remains lean.
MONITORING CONDITION

— ECT: more than 70

°C {158 °F}

— Engine speed: 1,000—3,200 rpm

— MAF amount: 6—80 g/s {0.80—10.58 lb/min}

— Target A/F feedback system status: feedback control

— Output voltage from the middle HO2S: more than 0.2 V

P2196 Front HO2S signal stuck rich

• The PCM monitors the front HO2S output current when the following conditions are met. If the average output

current is less than 0.85 A for 25 s, the PCM determines that the front HO2S signal remains rich.
MONITORING CONDITION

— ECT: more than 70

°C {158 °F}

— Engine speed: 1,000—3,200 rpm

— MAF amount: 6—80 g/s {0.80—10.58 lb/min}

— Target A/F feedback system status: feedback control

— Output voltage from the middle HO2S: less than 0.7 V

P2228 BARO sensor circuit low input

• PCM monitors input voltage from BARO sensor. If input voltage is below 2.1 V, PCM determines that BARO

sensor circuit has malfunction.

P2229 BARO sensor circuit high input

• PCM monitors input voltage from BARO sensor. If input voltage is above 4.0 V, PCM determines that BARO

sensor circuit has malfunction.

P2401 EVAP system leak detection pump motor circuit low

• The PCM monitors pump load current (EVAP line pressure), while evaporative leak monitor is operating. If the

pump load current is lower than specified, the PCM determines EVAP system leak detection pump motor circuit
has a malfunction.

P2402 EVAP system leak detection pump motor circuit high

• The PCM monitors pump load current (EVAP line pressure), while evaporative leak monitor is operating. If the

pump load current is higher than specified, the PCM determines EVAP system leak detection pump motor
circuit has a malfunction.

P2404 EVAP system leak detection pump sense circuit problem

• The PCM monitors pump load current (EVAP line pressure), while evaporative leak monitor is operating. After

obtaining the reference current value, if the time in which the pump load current reaches the reference current
value is less than the specification, the PCM determines air filter has a malfunction.

P2405 EVAP system leak detection pump sense circuit low input

• The PCM monitors pump load current (EVAP line pressure), while evaporative leak monitor is operating. If the

current is lower than the specification while the PCM obtains the reference current value, the PCM determines
EVAP system leak detection pump orifice has a malfunction.

P2407 EVAP system leak detection pump sense circuit intermittent

• The PCM monitors pump load current (EVAP line pressure), while evaporative leak monitor is operating. When

either of the following is detected 6 times or more successively, the PCM determines EVAP system leak
detection pump heater has a malfunction:

— While obtaining the reference current value, the change in pump load current exceeds the specification.

— After obtaining the reference current value, the pump load current is kept lower than the maximum pump

load current for more than the specified time.

P2502 Charging system voltage problem

• PCM judges generator output voltage is above 17 V or battery voltage is below 11 V during engine running.

P2503 Charging system voltage low

• PCM needs more than 20 A from generator, and judges generator output voltage to be below 8.5 V during

engine running.

P2504 Charging system voltage high

• PCM judges generator output voltage is above 18.5 V or battery voltage is above 16.0 V during engine

running.

P2507 PCM B+ voltage low

• The PCM monitors the voltage of back-up battery positive terminal. If the PCM detects battery positive terminal

voltage below 2.5 V for 2 s, the PCM determines that the backup voltage circuit has a malfunction.

P2610 PCM internal engine off timer performance

• PCM internal engine off timer is damaged.

End Of Sie

ON-BOARD DIAGNOSTIC

01–02–20

KOEO/KOER SELF-TEST [LF]

E5U010200000N04

• The self-test function consists of the KOEO (Key On Engine Off) self-test, performed when the ignition switch is

turned to the ON position and the engine is stopped; and the KOER (Key On Engine Running) self-test,
performed when idling. If a malfunction is detected when either self-test is executed, a DTC is displayed on the
WDS or equivalent. Using the self-test function, the present malfunction or a successful repair is readily
confirmed. Refer to the self-test function table for the corresponding DTCs.

KOEO (Key ON, Engine Off) Self-test

• The KOEO self-test is a powertrain control system self-diagnosis, performed when the ignition switch is turned

to the ON position and the engine is stopped. A KOEO self-test begins when the connected WDS or equivalent
sends an execute command to the PCM.

• As the KOEO self-test is performed, the PCM performs the inspection for set DTCs and if a malfunction is

detected the DTC is displayed on the WDS or equivalent.

KOER (Key ON, Engine Running) Self-test

• The KOER self-test is a powertrain control system self-diagnosis, performed when the ignition switch is turned

to the ON position and the engine is idling. A KOER self-test begins when the connected WDS or equivalent
sends an execute command to the PCM.

• As the KOER self-test is performed, the PCM performs the inspection for set DTCs and if a malfunction is

detected the DTC is displayed on the WDS or equivalent.

KOEO/KOER self-test table

×: Applicable

—: Not applicable

DTC No.

Condition

Test condition

KOEO

KOER

B1342

PCM malfunction

×

—

P0011

CMP timing over-advanced

—

×

P0012

CMP timing over-retarded

—

×

P0016

CKP-CMP correlation

—

—

P0030

Front HO2S heater control circuit problem

×

×

P0031

Front HO2S heater circuit low input

×

×

P0032

Front HO2S heater circuit high input

×

×

P0037

Rear HO2S heater circuit low input

×

×

P0038

Rear HO2S heater circuit high input

×

×

P0069

Manifold absolute pressure/atmospheric pressure correlation

—

—

P0101

MAF sensor circuit range/performance problem

—

—

P0102

MAF sensor circuit low input

×

×

P0103

MAF sensor circuit high input

×

×

P0107

MAP sensor circuit low input

×

×

P0108

MAP sensor circuit high input

×

×

P0111

IAT sensor circuit range/performance problem

—

—

P0112

IAT sensor circuit low input

×

×

P0113

IAT sensor circuit high input

×

×

P0116

Engine coolant temperature circuit range/performance

—

—

P0117

ECT sensor circuit low input

×

×

P0118

ECT sensor circuit high input

×

×

P0122

TP sensor No.1 circuit low input

×

×

P0123

TP sensor No.1 circuit high input

×

×

P0125

Excessive time to enter closed loop fuel control

—

—

P0126

Coolant thermostat stuck open

—

—

P0128

—

—

P0130

Front HO2S circuit problem

×

×

P0131

Front HO2S circuit low input

×

×

P0132

Front HO2S circuit high input

×

×

P0133

Front HO2S circuit problem

—

—

P0134

Front HO2S no activity detected

—

×

P0137

Rear HO2S circuit low input

×

×

P0138

Rear HO2S circuit high input

×

×