Code
P02E0
Generic
P — Powertrain
Diesel Intake Air Flow A Control Circuit/Open
Views:
UK: 18
EN: 69
RU: 39
AI status
Completed
Completed
100%
Causes
- Open or broken wiring in the intake air flow control circuit
- Disconnected, corroded or damaged connector at the actuator
- Failed intake air flow control actuator (stuck or electrically open)
- Blown fuse or faulty relay supplying the actuator circuit
- Poor or missing ground at actuator or module
- Water intrusion or contamination in connector
Symptoms
- Check Engine MIL illuminated
- Reduced engine performance or limp-home mode
- Poor or unstable idle
- Elevated smoke or increased emissions
- Turbo/boost control issues (reduced boost or overboost depending on system)
- Reduced fuel economy
What to check
- Read freeze frame and related DTCs to confirm context (boost, MAP, MAF codes)
- Visual inspection of wiring harness and connector at intake air flow valve for damage, corrosion or water
- Check fuses and relays related to intake actuator power
- Backprobe connector while key on/engine running to verify supply voltage and ground
- Measure continuity and resistance of actuator circuit to the ECM
- Wiggle test wiring while monitoring signal to reproduce intermittent open
Signal parameters
- Supply voltage: typically battery voltage present at switched power terminal (approx. 11–14 V with ignition on)
- Control signal: often PWM from ECM — duty cycle 0–100% at frequencies typically tens to a few hundred Hz (consult factory specs)
- Position/feedback sensor (if present): analog 0.5–4.5 V or variable resistance feedback (consult factory specs)
- Actuator coil/driver resistance: typically low ohms (single- to double-digit ohms) for a solenoid or a higher value for motorized actuators — check service manual for exact ohms
- Open-circuit condition: infinite/very high resistance or no continuity between actuator pins and ECM
Diagnostic algorithm
- Retrieve all stored codes and freeze-frame data. Note related boost, MAF, MAP, injector or cam/crank codes.
- Perform a visual inspection of the intake air flow valve, wiring harness and connector. Look for chafing, rodent damage, corrosion or moisture.
- With ignition ON (engine off), verify battery voltage at the actuator power terminal. If no power, trace fuse/relay and repair.
- Check ground integrity at the actuator ground pin. Measure voltage drop to chassis while cranking/operating.
- Measure continuity/resistance between the actuator pins and the ECM connector. Repair any open circuits or high-resistance connections.
- Backprobe the control and feedback pins with the engine running or with commanded on/off while monitoring with a DMM or scope. Look for expected PWM or feedback voltage. If no signal from ECM, check ECU driver and wiring.
- If wiring and power/ground are good but actuator shows open circuit, bench-test or replace the actuator.
- After repairs, clear codes, perform functional tests and road test to confirm proper operation and that the code does not return.
- If wiring and actuator test good and symptoms persist, consider module diagnostics per manufacturer procedures.
Likely causes
- Broken wire or connector pin corrosion between ECM and intake air flow valve
- Failed intake air flow control valve (electrical winding open or connector fault)
- Blown fuse or poor ground at the actuator circuit
Fault status
Status
PCM detected an open or interrupted control circuit for Diesel Intake Air Flow A — the intake air flow actuator is not receiving or returning the expected electrical signal.
Repair difficulty: Medium
Diagnostic time: 1.0 - 2.5 hours
Similar codes
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
0
👎 Dislike
0
Send to email
Code
P02E0
LAND ROVER
P — Powertrain
Diesel intake air flow control - Open circuit diesel intake airflow control
Views:
UK: 6
EN: 54
RU: 19
AI status
Completed
Completed
100%
Causes
- Open or broken wiring in the intake air flow control circuit
- Disconnected, corroded or damaged connector at the actuator
- Failed intake air flow control actuator (stuck or electrically open)
- Blown fuse or faulty relay supplying the actuator circuit
- Poor or missing ground at actuator or module
- Water intrusion or contamination in connector
Symptoms
- Check Engine MIL illuminated
- Reduced engine performance or limp-home mode
- Poor or unstable idle
- Elevated smoke or increased emissions
- Turbo/boost control issues (reduced boost or overboost depending on system)
- Reduced fuel economy
What to check
- Read freeze frame and related DTCs to confirm context (boost, MAP, MAF codes)
- Visual inspection of wiring harness and connector at intake air flow valve for damage, corrosion or water
- Check fuses and relays related to intake actuator power
- Backprobe connector while key on/engine running to verify supply voltage and ground
- Measure continuity and resistance of actuator circuit to the ECM
- Wiggle test wiring while monitoring signal to reproduce intermittent open
Signal parameters
- Supply voltage: typically battery voltage present at switched power terminal (approx. 11–14 V with ignition on)
- Control signal: often PWM from ECM — duty cycle 0–100% at frequencies typically tens to a few hundred Hz (consult factory specs)
- Position/feedback sensor (if present): analog 0.5–4.5 V or variable resistance feedback (consult factory specs)
- Actuator coil/driver resistance: typically low ohms (single- to double-digit ohms) for a solenoid or a higher value for motorized actuators — check service manual for exact ohms
- Open-circuit condition: infinite/very high resistance or no continuity between actuator pins and ECM
Diagnostic algorithm
- Retrieve all stored codes and freeze-frame data. Note related boost, MAF, MAP, injector or cam/crank codes.
- Perform a visual inspection of the intake air flow valve, wiring harness and connector. Look for chafing, rodent damage, corrosion or moisture.
- With ignition ON (engine off), verify battery voltage at the actuator power terminal. If no power, trace fuse/relay and repair.
- Check ground integrity at the actuator ground pin. Measure voltage drop to chassis while cranking/operating.
- Measure continuity/resistance between the actuator pins and the ECM connector. Repair any open circuits or high-resistance connections.
- Backprobe the control and feedback pins with the engine running or with commanded on/off while monitoring with a DMM or scope. Look for expected PWM or feedback voltage. If no signal from ECM, check ECU driver and wiring.
- If wiring and power/ground are good but actuator shows open circuit, bench-test or replace the actuator.
- After repairs, clear codes, perform functional tests and road test to confirm proper operation and that the code does not return.
- If wiring and actuator test good and symptoms persist, consider module diagnostics per manufacturer procedures.
Likely causes
- Broken wire or connector pin corrosion between ECM and intake air flow valve
- Failed intake air flow control valve (electrical winding open or connector fault)
- Blown fuse or poor ground at the actuator circuit
Fault status
Status
PCM detected an open or interrupted control circuit for Diesel Intake Air Flow A — the intake air flow actuator is not receiving or returning the expected electrical signal.
Repair difficulty: Medium
Diagnostic time: 1.0 - 2.5 hours
Similar codes
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
0
👎 Dislike
0
Send to email