Car Codes diagnostic trouble code
SCR NOx Catalyst Efficiency Below Threshold Bank 1 Catalyst 1Diagnostic contextPotentially applicable to OBD-II-compliant vehicles; confirm against vehicle VIN, model year and module.Vehicle applicabilityApplicability varies by vehicle, powertrain, model year and control module.
Code interpretation
What P20EE means
This code indicates SCR NOx Catalyst Efficiency Below Threshold Bank 1 Catalyst 1 Its precise meaning depends on the reporting control module, complete failure-type suffix, model year, powertrain and software level.
Driver experience
Symptoms you may notice
A stored diagnostic trouble code or related system symptom.
Test, do not guess
Possible causes
Confirm the reporting module, circuit condition, power supply, wiring, component performance and software status.
Evidence-led checks
Recommended diagnostic route
Save the complete scan, confirm the full code and reporting module, then test using model-specific multi-brand technical information.
- Capture the evidenceSave the complete all-module scan, code suffixes and freeze-frame data.
- Prove the basicsTest battery condition, system voltage, power and grounds.
- Identify the reporterConfirm the module that logged the code and check circuit integrity.
- Compare live dataReview commanded and actual values under the conditions that set the code.
- Test before replacingUse model-specific wiring diagrams, pin tests and technical information.
- Verify the repairClear the code only after recording evidence, then confirm it does not return.
Vehicle fitment
Vehicle applicability
Volkswagen Touareg, Jeep Grand Cherokee
Before clearing
Can the code be cleared?
Clearing a code without fixing the cause removes useful evidence and may only switch the warning off temporarily. Save the full scan first; a permanent or repeatedly returning code needs testing.
Confirm the suffix, reporting module, model, year, engine and live data before replacing a component.
Verified public evidence
Manufacturer and model coverage
14 public manufacturer records match this search. These records support applicability research but do not replace VIN-specific workshop information.
GRAND CHEROKEE · 2014 · Powertrain
P20EE SCR NOX Catalyst Efficiency Below Threshold Bank 1 This bulletin involves replacing the Selective Catalyst Reduction (SCR) Catalyst assembly. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon…
SourceGRAND CHEROKEE · 2015 · Powertrain
…n there may be a Malfunction Indicator Lamp (MIL) illuminated. Upon further investigation, a technician may find one or more of the following Diagnostic Trouble Codes (DTCs). ? P20EE -…
SourceGRAND CHEROKEE · 2014 · Powertrain
P20EE SCR NOX Catalyst Efficiency Below Threshold Bank 1 This bulletin involves verifying the proper operation of the Diesel Exhaust Fluid (DEF) system and, if necessary, replacing the Selective Catalyst…
SourceGRAND CHEROKEE · 2014 · Powertrain
…TOO LOW ? P200A - INTAKE MANIFOLD RUNNER PERFORMANCE - BANK 1 ? P200B - INTAKE MANIFOLD RUNNER PERFORMANCE - BANK 2 ? P20BA - REDUCTANT HEATER 1 CONTROL CIRCUIT…
SourceGRAND CHEROKEE · 2014 · Powertrain
P20EE SCR NOX Catalyst Efficiency Below Threshold Bank 1
SourceGRAND CHEROKEE · 2014 · Powertrain
…FORMANCE ? P200A - INTAKE MANIFOLD RUNNER PERFORMANCE - BANK 1 ? P200B - INTAKE MANIFOLD RUNNER PERFORMANCE - BANK 2 ? P20BA - REDUCTANT HEATER 1 CONTROL CIRCUIT PERFORMANCE…
SourceGRAND CHEROKEE · 2015 · Powertrain
…n there may be a Malfunction Indicator Lamp (MIL) illuminated. Upon further investigation, a technician may find one or more of the following Diagnostic Trouble Codes (DTCs). ? P20EE -…
SourceGRAND CHEROKEE · 2015 · Powertrain
…ion there may be a Malfunction Indicator Lamp (MIL) illuminated. Upon further investigation, a technician may find one or more of the following Diagnostic Trouble Codes (DTCs). ? P20EE -…
SourceGRAND CHEROKEE · 2014 · Powertrain
P20EE SCR NOX Catalyst Efficiency Below Threshold Bank 1 This bulletin involves verifying the proper operation of the Diesel Exhaust Fluid (DEF) system and, if necessary, replacing the Selective Catalyst…
SourceTOUAREG · 2011 · Powertrain
…wing faults to set in the ECM/EDC memory during system checks: ? P208C ? Reductant Pump ?A? Control Circuit Low ? P208E ? Reductant Injection Valve Stuck Closed Bank 1…
SourceTOUAREG · 2012 · Powertrain
…wing faults to set in the ECM/EDC memory during system checks: ? P208C ? Reductant Pump ?A? Control Circuit Low ? P208E ? Reductant Injection Valve Stuck Closed Bank 1…
SourceTOUAREG · 2013 · Powertrain
Update Programming, MIL ON, Faults P0299, P0403, P20EE, P229F, P2100, P0045, P2008, P24AF, P026A, and/or P050E Stored in ECM Fault Memory
SourceTOUAREG · 2011 · Powertrain
…wing faults to set in the ECM/EDC memory during system checks: ? P208C ? Reductant Pump ?A? Control Circuit Low ? P208E ? Reductant Injection Valve Stuck Closed Bank 1…
SourceTOUAREG · 2012 · Powertrain
…wing faults to set in the ECM/EDC memory during system checks: ? P208C ? Reductant Pump ?A? Control Circuit Low ? P208E ? Reductant Injection Valve Stuck Closed Bank 1…
Source