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Sae P1XXX Diagnostic Trouble Codes

For Monitor Strategy Information Refer to: Bosch Motronic ME 5.9.2 OBD System Strategy

Fuel and Air ratios, control module 

DTC Error Message Diagnostic Procedure Malfunction Criteria and Threshold Value Secondary Parameters with Enable Conditions Monitoring Time Length Frequency of checks, MIL Illumination
P1127 Mixture adaption (mult.) system too rich (Bank 1) -- Refer to OXYGEN SENSOR HEATER AFTER CATALYTIC CONVERTER G108, CHECKING . System too rich <-23% System too lean>+23% Within adaptive range Lambda control - Closed loop Intake temp. - <150.35° F Engine load - >2 ms Air mass <25 kg/h 19 Sec
  • Continuous
  • 2 DCY
P1128 Mixture adaption (mult.) system too lean (Bank 1) -- Refer to OXYGEN SENSOR HEATER AFTER CATALYTIC CONVERTER G108, CHECKING . System too rich <-23% System too lean>+23% Within adaptive range Lambda control - Closed loop Intake temp. - <150.35°F Engine load - >2 ms Air mass <25 kg/h 19 Sec
  • Continuous
  • 2 DCY
P1176 Lambda correction downstream of catalyst control limit reached (Bank 1) -- Refer to OXYGEN SENSOR HEATER AFTER CATALYTIC CONVERTER G108, CHECKING . Comparison of TV value with threshold value TV<1.2 sec. TV>-1.2 sec. Catalyst temp. - >66°F 2nd control loop - Closed 35 Sec
  • Continuous
  • 2 DCY
P1213 Cylinder 1 Injector Circuit High -- Refer to FUEL INJECTORS N30, N31, N32, N33, CHECKING . Short to battery + Signal high before injection valves switched on --- 0.5 Sec
  • Continuous
  • 2 DCY
P1214 Cylinder 2 Injector Circuit High -- Refer to FUEL INJECTORS N30, N31, N32, N33, CHECKING . Short to battery+ Signal high before injection valves switched on --- 0.5 Sec
  • Continuous
  • 2 DCY
P1215 Cylinder 3 Injector Circuit High -- Refer to FUEL INJECTORS N30, N31, N32, N33, CHECKING . Short to battery + Signal high before injection valves switched on --- 0.5 Sec
  • Continuous
  • 2 DCY
P1216 Cylinder 4 Injector Circuit High -- Refer to FUEL INJECTORS N30, N31, N32, N33, CHECKING . Short to battery + Signal high before injection valves switched on --- 0.5 Sec
  • Continuous
  • 2 DCY
P1225 Cylinder 1 Injector Circuit Low -- Refer to FUEL INJECTORS N30, N31, N32, N33, CHECKING . Short to ground. Signal low while injection valves switched on --- 0.5 Sec
  • Continuous
  • 2 DCY
P1226 Cylinder 2 Injector Circuit Low -- Refer to FUEL INJECTORS N30, N31, N32, N33, CHECKING . Short to ground. Signal low while injection valves switched on --- 0.5 Sec
  • Continuous
  • 2 DCY
P1227 Cylinder 3 Injector Circuit Low -- Refer to FUEL INJECTORS N30, N31, N32, N33, CHECKING . Short to ground. Signal low while injection valves switched on --- 0.5 Sec
  • Continuous
  • 2 DCY
P1228 Cylinder 4 Injector Circuit Low -- Refer to FUEL INJECTORS N30, N31, N32, N33, CHECKING . Short to ground. Signal low while injection valves switched on --- 0.5 Sec
  • Continuous
  • 2 DCY
P1237 Cylinder 1 injector open circuit -- Refer to FUEL INJECTORS N30, N31, N32, N33, CHECKING . Open circuit Signal low while injection valves switched on --- 0.5 Sec
  • Continuous
  • 2 DCY
P1238 Cylinder 2 injector open circuit -- Refer to FUEL INJECTORS N30, N31, N32, N33, CHECKING . Open circuit Signal low while injection valves switched on --- 0.5 Sec
  • Continuous
  • 2 DCY
P1239 Cylinder 3 injector open circuit -- Refer to FUEL INJECTORS N30, N31, N32, N33, CHECKING . Open circuit Signal low while injection valves switched on --- 0.5 Sec
  • Continuous
  • 2 DCY
P1240 Cylinder 4 injector open circuit -- Refer to FUEL INJECTORS N30, N31, N32, N33, CHECKING . Open circuit Signal low while injection valves switched on --- 0.5 Sec
  • Continuous
  • Immediate
P1255 Engine Coolant Temperature (ECT) Sensor -G62- Short to Ground -- Refer to ENGINE COOLANT TEMPERATURE SENSOR G62, CHECKING . Short to Ground>+268.3°F --- 0.5 Sec
  • Continuous
  • 2 DCY
P1256 Engine Coolant Temperature (ECT) Sensor -G62- Open circuit/short to B+ -- Refer to ENGINE COOLANT TEMPERATURE SENSOR G62, CHECKING . Short to Battery+ <-47.7° F --- 0.5 Sec
  • Continuous
  • 2 DCY
P1296 Malfunction in cooling system -- Refer to ENGINE COOLANT TEMPERATURE SENSOR G62, CHECKING . Stuck on sensor -No change on signal after start Engine start temperature 180 Sec. Closed loop will be enforced -7°C: 300 Sec. 10°C:120 Sec.
  • 2 DCY
P1300 Misfire Detected Low Fuel -- Check the Fuel Pump Delivery and Supply.FUEL SUPPLY Any misfire under low fuel conditions Fuel level <15% of fuel capacity ---
  • 2 DCY
P1410 Evaporative Emission (EVAP) Canister Purge Regulator Valve Short to B+ -- Refer to EVAP CANISTER PURGE REGULATOR VALVE N80, CHECKING . Short to battery+ Signal high --- 20 Sec
  • Continuous
  • 2 DCY
P1425 Evaporative Emission (EVAP) Canister Purge Regulator Valve Short to Ground -- Refer to EVAP CANISTER PURGE REGULATOR VALVE N80, CHECKING . Short to ground. Signal low --- 20 Sec
  • Continuous
  • 2 DCY
P1426 Evaporative Emission System Purge Control Valve Circuit Open -- Refer to EVAP CANISTER PURGE REGULATOR VALVE N80, CHECKING . Open circuit No activity/No signal --- 20 Sec
  • Continuous
  • 2 DCY
P1471 EVAP Emission Control LPD Circuit Short to B+ -- Refer to EVAP CANISTER PURGE REGULATOR VALVE N80, CHECKING . Short to battery+. Signal always high --- 0.2 Sec. Once/DCY
  • 2 DCY
P1472 EVAP Emission Control LPD Circuit Short to Ground -- Refer to LEAK DETECTION PUMP V144, CHECKING . Short to ground. No signal after start --- 0.2 Sec. Once/DCY
  • 2 DCY
P1473 Leak diagnosis pump - tank breather system open circuit -- Refer to LEAK DETECTION PUMP V144, CHECKING . Open circuit. No activity/No signal --- 0.2 Sec. Once/DCY
  • 2 DCY
P1475 Leak diagnosis pump - tank breather system malfunction/no signal -- Refer to LEAK DETECTION PUMP V144, CHECKING . No signal Signal always low EVAP purge check done or followed by EVAP purge check 0.5 Sec Once/DCY
  • 2 DCY
P1476 Leak diagnosis pump - tank breather system malfunction/vacuum to low -- Refer to LEAK DETECTION PUMP V144, CHECKING . Contact unable to open Signal high> 0.5 sec. EVAP purge check done or followed by EVAP purge check 0.5 Sec Once/DCY
  • 2 DCY
P1500 Fuel Pump Primary Circuit Fault in electrical circuit -- Refer to FUEL SUPPLY No signal --- 0.5 Sec
  • Continuous
  • Immediate
P1502 Fuel Pump (FP) Relay Short circuit to B+ -- Refer to FUEL SUPPLY High signal --- 0.5 Sec
  • Continuous
  • Immediate
P1543 Angle sender 1 for throttle valve drive -G187 signal too low -- Refer to THROTTLE VALVE CONTROL MODULE J338, CHECKING . Signal low <0.157 V --- 5 Sec
  • Continuous
  • Immediate
P1544 Angle sender 1 for throttle valve drive -G187 signal too high -- Refer to THROTTLE VALVE CONTROL MODULE J338, CHECKING . Signal high >4.86 V --- 5 Sec
  • Continuous
  • Immediate
P1558 Throttle valve drive -G186 electrical fault in circuit -- Refer to THROTTLE VALVE CONTROL MODULE J338, CHECKING . Open circuit or no activity --- 5 Sec
  • Continuous
  • Immediate
P1565 Throttle valve control part -J338- lower stop not reached -- Refer to THROTTLE VALVE CONTROL MODULE J338, CHECKING . Signal low <4.157 V Initialize of potentiometer adaptation - After ignition on, if adaptation has not been completed 10 Sec
  • Continuous
  • 2 DCY
P1580 Throttle valve drive - bank 1 malfunction -- Refer to THROTTLE VALVE CONTROL MODULE J338, CHECKING . Comparison with throttle movement --- 5 Sec
  • Continuous
  • Immediate
P1582 Idling speed regulation adaption limit reached -- Check fuel pressure regulator and residual pressure-- Refer to EVAP CANISTER PURGE REGULATOR VALVE N80, CHECKING .-- Refer to FUEL INJECTORS N30, N31, N32, N33, CHECKING .-- Check vacuum lines for leaks Signal low >4.571 V Signal high <4.037 V Potentiometer used in reversed logic (adaptive values) --- 5 Sec
  • Continuous
  • Immediate
P1612 Engine control unit incorrect coding -- Refer to MOTRONIC ENGINE CONTROL MODULE J220, REPLACING . If ECM is coded to manual transmission and TCM is available->ECM is wrong coded After engine has been started 0.5 Sec
  • Continuous
  • Immediate
P1626 Data-bus drive train missing message from transmission control module -- Refer to TRANSMISSION CONTROL MODULE J217 . Initialize failure and/or no acknowledge After engine has been started 0.5 Sec
  • Continuous
  • Immediate
P1681 Control unit programming not finished -- Refer to MOTRONIC ENGINE CONTROL MODULE J220, REPLACING . Reprogramming bit not set --- 0.5 Sec
  • Once / DCY
  • Immediate
P1778 Valve 7 electrical fault in circuit -- Refer to [For transmission(s) 09G] Transmission Control Module J217, Coding . Comparison of stored value with active level Switch off and U <2.1 V; Switch on and U>1.6 V --- 0.3 Sec 2 DCY
P1780 Torque withdrawal faulty -- Refer to [For transmission(s) 09G] Torque Converter, Installing or refer to [For transmission(s) 01M] Torque Converter . Torque reduction not possible yes/no Torque reduction requested by TCM 1 Sec 2 DCY
P1850 Data-bus drive train missing message from engine control module -- Refer to CAN-BUS TERMINAL RESISTANCE, TRANSMISSION CONTROL MODULE J217 TO ENGINE CONTROL MODULE J220, CHECKING . No signal within 300 ms CAN bus ok -500 ms after ign. on 300 ms 2 DCY
P1854 Data-Bus driving gear Hardware faulty -- Refer to CAN-BUS TERMINAL RESISTANCE, TRANSMISSION CONTROL MODULE J217 TO ENGINE CONTROL MODULE J220, CHECKING . Initialize failure and/or no acknowledge 2 attempts of initialize 500 ms after ign. on 300 ms 2 DCY
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